QR matrix encoder attribution and source identity

MatrixEncoder.php and EncoderTables.php derive the QR encoding algorithm and
QR tables from qrcode-generator 1.5.0 by Kazuhiko Arase.
Copyright (c) 2009 Kazuhiko Arase.
https://github.com/kazuhikoarase/qrcode-generator

Pinned source: C31 reference-capsule/files/frontend/node_modules/qrcode-generator/qrcode.js
Source bytes: 56694
Source SHA-256: 18ae399f81182bc9de916e9c77b195df20cc58d6f2d55a62b085a299f1bf1780
The installed frontend dependency was verified byte-identical before this port.
Development vectors invoke the retained original JavaScript directly.

MIT License

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.

The word "QR Code" is a registered trademark of DENSO WAVE INCORPORATED.
