[docs] Added WoltLab Suite Integration

docs/Usage/Overview.md

@@ -55,6 +55,7 @@ For the QR Code reader, either `ext-gd` or `ext-imagick` is required!
   - [floating-share-button](https://github.com/qriouslad/floating-share-button)
 - WoltLab Suite
   - [two-step-verification](http://pluginstore.woltlab.com/file/3007-two-step-verification/)
+  - [[Developer] PHP QR Code](https://www.woltlab.com/pluginstore/file/7995-entwickler-php-qr-code/)
 - other uses:
   - [dependents](https://github.com/chillerlan/php-qrcode/network/dependents) / [packages](https://github.com/chillerlan/php-qrcode/network/dependents?dependent_type=PACKAGE)
   - [Appwrite](https://github.com/appwrite/appwrite)