Run test for pull requests, add some functional tests

Add PHP bindings

https://community.libretranslate.com/t/php-class-for-libretranslate/195

Focus textarea after delete text

Flask-Limiter 2.2 require >= python 3.7

Added models include option in docker build

Fix Docker build failing due to username casing

Improve container publishing workflow

Set jinja2 version

Upgrade to flask 2