add routes to add users and remove user in a group

app/routes.php

@@ -18,6 +18,7 @@ use App\Application\Actions\Group\ModifyGroupAction;
 use App\Application\Actions\Group\DeleteGroupAction;
 use App\Application\Actions\Group\AddUserGroupAction;
 use App\Application\Actions\Group\AddUsersGroupAction;
+use App\Application\Actions\Group\DeleteUserGroupAction;
 
 use App\Application\Actions\Search\SearchAction;
 use App\Application\Actions\Search\ListUsersJson;
@@ -132,8 +133,9 @@ return function (App $app) {
             $group->post('/{id}/delete', DeleteGroupAction::class);
             $group->get('/{id}/modify', ViewModifyGroupForm::class);
             $group->post('/{id}/modify', ModifyGroupAction::class);
-            $group->post('/{id}/add', AddUserGroupAction::class);
-            $group->post('/{id}/add_multiple', AddUsersGroupAction::class);
+            $group->post('/{id}/users/add', AddUserGroupAction::class);
+            $group->post('/{id}/users/add_multiple', AddUsersGroupAction::class);
+            $group->post('/{id}/users/{user_id}/delete', DeleteUserGroupAction::class);
             $group->get('/{id}', ViewGroupAction::class);
 
         }