feat: add registration control setting, invites (WIP)

Signed-off-by: Miguel Nogueira <me@nogueira.codes>

app/Http/Controllers/OptionsController.php

@@ -55,6 +55,9 @@ class OptionsController extends Controller
                     'requiresPMC' => Options::getOption('requireGameLicense'),
                     'enforce2fa' => Options::getOption('force2fa'),
                 ],
+                'features' => [
+                  'enableRegistrations' => Options::getOption('enable_registrations')
+                ],
                 'currentGame' => Options::getOption('currentGame'),
             ]);
     }

app/Http/Controllers/SecuritySettingsController.php

@@ -21,6 +21,7 @@ class SecuritySettingsController extends Controller
             'pwExpiry' => $request->pwExpiry,
             'enforce2fa' => $request->enforce2fa,
             'requirePMC' => $request->requirePMC,
+            'enable_registrations' => $request->input('enable_registrations')
         ]);
 
         return redirect()