(Add) Manual User Warning #1705

[Alkl58]

As always: Test before merging this PR! (It has been several months since I touched this code and I am not 100% sure if something is missing)

Added Button:

Clicking on the Button:

This PR changes the warnings table:

Schema::table('warnings', function (Blueprint $table) {
     $table->bigInteger('torrent')->unsigned()->nullable()->change();
});

A new route has been added:

Route::post('/{username}/warn', [App\Http\Controllers\Staff\UserController::class, 'warnUser'])->name('user_warn');

For the frontend representation: Basically it checks if the value torrent exist:

@if(isset($warning->torrent))
<a class="text-bold"
     href="{{ route('torrent', ['id' => $warning->torrenttitle->id]) }}">
     {{ $warning->torrenttitle->name }}
 </a>
@else
n/a
@endif

It should look like this: