feat: add loa requests

This commit adds a feature that allows users to request periods of inactivity from their managers. This is effectively known as a leave of absence.

The commit also introduces new permissions and migrations, therefore, you'll need to adapt your database according to these changes.

resources/views/components/button.blade.php

@@ -9,7 +9,7 @@
         </button>
     </a>
 @else
-    <button {{ ($disabled == true) ? 'disabled' : ''}} type="{{ $type }}" class="btn {{ !empty($size) ? 'btn-' . $size : '' }} btn-{{ $color }}" id="{{ $id }}">
+    <button {{ ($disabled == true) ? 'disabled' : ''}} type="{{ $type }}" class="ml-2 btn {{ !empty($size) ? 'btn-' . $size : '' }} btn-{{ $color }}" id="{{ $id }}">
         @if (empty($icon))
             {{ $slot }}
         @else