Add some new Laravel's validation rules.
Add some new Laravel's validation rules.

Refers to:
- https://github.com/laravel/laravel/commit/ef6b5a6343f6e1b0ab48e7feb5fac5a07584752d
- https://github.com/laravel/laravel/commit/fa6c48d27c54d7495e64a9ace39392d29014e46a
- https://github.com/laravel/laravel/commit/c36799dddeaff2a0129b2dc2a18d34651463b9a8
- https://github.com/laravel/laravel/commit/789c75c24ace662218d4656d3754fc343e34bac6
balkanje/flarum-ext-bosnian1,flarum/flarum-ext-english,pladask/flarum-ext-norwegian-nynorsk,pladask/flarum-ext-norwegian-bokmal,ogioncz/flarum-ext-czech,FlarumChina/flarum-ext-simplified-chinese-pro,gtugablue/flarum-ext-portuguese,flarum/english,pladask/flarum-ext-norwegian-bokmal,raweba/flarum-ext-danish,ogioncz/flarum-ext-czech,pladask/flarum-ext-norwegian-nynorsk,FlarumChina/flarum-ext-simplified-chinese-pro