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diff --git a/vendor/chillerlan/php-qrcode/src/QRCode.php b/vendor/chillerlan/php-qrcode/src/QRCode.php
new file mode 100755
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+++ b/vendor/chillerlan/php-qrcode/src/QRCode.php
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+<?php
+/**
+ * Class QRCode
+ *
+ * @filesource   QRCode.php
+ * @created      26.11.2015
+ * @package      chillerlan\QRCode
+ * @author       Smiley <smiley@chillerlan.net>
+ * @copyright    2015 Smiley
+ * @license      MIT
+ */
+
+namespace chillerlan\QRCode;
+
+use chillerlan\QRCode\Data\{
+	AlphaNum, Byte, Kanji, MaskPatternTester, Number, QRCodeDataException, QRDataInterface, QRMatrix
+};
+use chillerlan\QRCode\Output\{
+	QRCodeOutputException, QRFpdf, QRImage, QRImagick, QRMarkup, QROutputInterface, QRString
+};
+use chillerlan\Settings\SettingsContainerInterface;
+
+use function call_user_func_array, class_exists, in_array, ord, strlen, strtolower, str_split;
+
+/**
+ * Turns a text string into a Model 2 QR Code
+ *
+ * @see https://github.com/kazuhikoarase/qrcode-generator/tree/master/php
+ * @see http://www.qrcode.com/en/codes/model12.html
+ * @see https://www.swisseduc.ch/informatik/theoretische_informatik/qr_codes/docs/qr_standard.pdf
+ * @see https://en.wikipedia.org/wiki/QR_code
+ * @see http://www.thonky.com/qr-code-tutorial/
+ */
+class QRCode{
+
+	/** @var int */
+	public const VERSION_AUTO       = -1;
+	/** @var int */
+	public const MASK_PATTERN_AUTO  = -1;
+
+	// ISO/IEC 18004:2000 Table 2
+
+	/** @var int */
+	public const DATA_NUMBER   = 0b0001;
+	/** @var int */
+	public const DATA_ALPHANUM = 0b0010;
+	/** @var int */
+	public const DATA_BYTE     = 0b0100;
+	/** @var int */
+	public const DATA_KANJI    = 0b1000;
+
+	/**
+	 * References to the keys of the following tables:
+	 *
+	 * @see \chillerlan\QRCode\Data\QRDataInterface::MAX_LENGTH
+	 *
+	 * @var int[]
+	 */
+	public const DATA_MODES = [
+		self::DATA_NUMBER   => 0,
+		self::DATA_ALPHANUM => 1,
+		self::DATA_BYTE     => 2,
+		self::DATA_KANJI    => 3,
+	];
+
+	// ISO/IEC 18004:2000 Tables 12, 25
+
+	/** @var int */
+	public const ECC_L = 0b01; // 7%.
+	/** @var int */
+	public const ECC_M = 0b00; // 15%.
+	/** @var int */
+	public const ECC_Q = 0b11; // 25%.
+	/** @var int */
+	public const ECC_H = 0b10; // 30%.
+
+	/**
+	 * References to the keys of the following tables:
+	 *
+	 * @see \chillerlan\QRCode\Data\QRDataInterface::MAX_BITS
+	 * @see \chillerlan\QRCode\Data\QRDataInterface::RSBLOCKS
+	 * @see \chillerlan\QRCode\Data\QRMatrix::formatPattern
+	 *
+	 * @var int[]
+	 */
+	public const ECC_MODES = [
+		self::ECC_L => 0,
+		self::ECC_M => 1,
+		self::ECC_Q => 2,
+		self::ECC_H => 3,
+	];
+
+	/** @var string */
+	public const OUTPUT_MARKUP_HTML = 'html';
+	/** @var string */
+	public const OUTPUT_MARKUP_SVG  = 'svg';
+	/** @var string */
+	public const OUTPUT_IMAGE_PNG   = 'png';
+	/** @var string */
+	public const OUTPUT_IMAGE_JPG   = 'jpg';
+	/** @var string */
+	public const OUTPUT_IMAGE_GIF   = 'gif';
+	/** @var string */
+	public const OUTPUT_STRING_JSON = 'json';
+	/** @var string */
+	public const OUTPUT_STRING_TEXT = 'text';
+	/** @var string */
+	public const OUTPUT_IMAGICK     = 'imagick';
+	/** @var string */
+	public const OUTPUT_FPDF        = 'fpdf';
+	/** @var string */
+	public const OUTPUT_CUSTOM      = 'custom';
+
+	/**
+	 * Map of built-in output modules => capabilities
+	 *
+	 * @var string[][]
+	 */
+	public const OUTPUT_MODES = [
+		QRMarkup::class => [
+			self::OUTPUT_MARKUP_SVG,
+			self::OUTPUT_MARKUP_HTML,
+		],
+		QRImage::class => [
+			self::OUTPUT_IMAGE_PNG,
+			self::OUTPUT_IMAGE_GIF,
+			self::OUTPUT_IMAGE_JPG,
+		],
+		QRString::class => [
+			self::OUTPUT_STRING_JSON,
+			self::OUTPUT_STRING_TEXT,
+		],
+		QRImagick::class => [
+			self::OUTPUT_IMAGICK,
+		],
+		QRFpdf::class => [
+			self::OUTPUT_FPDF
+		]
+	];
+
+	/**
+	 * Map of data mode => interface
+	 *
+	 * @var string[]
+	 */
+	protected const DATA_INTERFACES = [
+		'number'   => Number::class,
+		'alphanum' => AlphaNum::class,
+		'kanji'    => Kanji::class,
+		'byte'     => Byte::class,
+	];
+
+	/**
+	 * The settings container
+	 *
+	 * @var \chillerlan\QRCode\QROptions|\chillerlan\Settings\SettingsContainerInterface
+	 */
+	protected SettingsContainerInterface $options;
+
+	/**
+	 * The selected data interface (Number, AlphaNum, Kanji, Byte)
+	 */
+	protected QRDataInterface $dataInterface;
+
+	/**
+	 * QRCode constructor.
+	 *
+	 * Sets the options instance, determines the current mb-encoding and sets it to UTF-8
+	 */
+	public function __construct(SettingsContainerInterface $options = null){
+		$this->options = $options ?? new QROptions;
+	}
+
+	/**
+	 * Renders a QR Code for the given $data and QROptions
+	 *
+	 * @return mixed
+	 */
+	public function render(string $data, string $file = null){
+		return $this->initOutputInterface($data)->dump($file);
+	}
+
+	/**
+	 * Returns a QRMatrix object for the given $data and current QROptions
+	 *
+	 * @throws \chillerlan\QRCode\Data\QRCodeDataException
+	 */
+	public function getMatrix(string $data):QRMatrix{
+
+		if(empty($data)){
+			throw new QRCodeDataException('QRCode::getMatrix() No data given.');
+		}
+
+		$this->dataInterface = $this->initDataInterface($data);
+
+		$maskPattern = $this->options->maskPattern === $this::MASK_PATTERN_AUTO
+			? (new MaskPatternTester($this->dataInterface))->getBestMaskPattern()
+			: $this->options->maskPattern;
+
+		$matrix = $this->dataInterface->initMatrix($maskPattern);
+
+		if((bool)$this->options->addQuietzone){
+			$matrix->setQuietZone($this->options->quietzoneSize);
+		}
+
+		return $matrix;
+	}
+
+	/**
+	 * returns a fresh QRDataInterface for the given $data
+	 *
+	 * @throws \chillerlan\QRCode\Data\QRCodeDataException
+	 */
+	public function initDataInterface(string $data):QRDataInterface{
+
+		// allow forcing the data mode
+		// see https://github.com/chillerlan/php-qrcode/issues/39
+		$interface = $this::DATA_INTERFACES[strtolower($this->options->dataModeOverride)] ?? null;
+
+		if($interface !== null){
+			return new $interface($this->options, $data);
+		}
+
+		foreach($this::DATA_INTERFACES as $mode => $dataInterface){
+
+			if(call_user_func_array([$this, 'is'.$mode], [$data])){
+				return new $dataInterface($this->options, $data);
+			}
+
+		}
+
+		throw new QRCodeDataException('invalid data type'); // @codeCoverageIgnore
+	}
+
+	/**
+	 * returns a fresh (built-in) QROutputInterface
+	 *
+	 * @throws \chillerlan\QRCode\Output\QRCodeOutputException
+	 */
+	protected function initOutputInterface(string $data):QROutputInterface{
+
+		if($this->options->outputType === $this::OUTPUT_CUSTOM && class_exists($this->options->outputInterface)){
+			/** @phan-suppress-next-line PhanTypeExpectedObjectOrClassName */
+			return new $this->options->outputInterface($this->options, $this->getMatrix($data));
+		}
+
+		foreach($this::OUTPUT_MODES as $outputInterface => $modes){
+
+			if(in_array($this->options->outputType, $modes, true) && class_exists($outputInterface)){
+				return new $outputInterface($this->options, $this->getMatrix($data));
+			}
+
+		}
+
+		throw new QRCodeOutputException('invalid output type');
+	}
+
+	/**
+	 * checks if a string qualifies as numeric
+	 */
+	public function isNumber(string $string):bool{
+		return $this->checkString($string, QRDataInterface::CHAR_MAP_NUMBER);
+	}
+
+	/**
+	 * checks if a string qualifies as alphanumeric
+	 */
+	public function isAlphaNum(string $string):bool{
+		return $this->checkString($string, QRDataInterface::CHAR_MAP_ALPHANUM);
+	}
+
+	/**
+	 * checks is a given $string matches the characters of a given $charmap, returns false on the first invalid occurence.
+	 */
+	protected function checkString(string $string, array $charmap):bool{
+
+		foreach(str_split($string) as $chr){
+			if(!isset($charmap[$chr])){
+				return false;
+			}
+		}
+
+		return true;
+	}
+
+	/**
+	 * checks if a string qualifies as Kanji
+	 */
+	public function isKanji(string $string):bool{
+		$i   = 0;
+		$len = strlen($string);
+
+		while($i + 1 < $len){
+			$c = ((0xff & ord($string[$i])) << 8) | (0xff & ord($string[$i + 1]));
+
+			if(!($c >= 0x8140 && $c <= 0x9FFC) && !($c >= 0xE040 && $c <= 0xEBBF)){
+				return false;
+			}
+
+			$i += 2;
+		}
+
+		return $i >= $len;
+	}
+
+	/**
+	 * a dummy
+	 */
+	public function isByte(string $data):bool{
+		return $data !== '';
+	}
+
+}