feat: add GitHub OAuth2 authentication support

frontend/src/app/app.routes.ts

@@ -33,6 +33,13 @@ export const routes: Routes = [
         (m) => m.RecoverPasswordComponent
       ),
   },
+  {
+    path: 'oauth2/callback/github',
+    loadComponent: () =>
+      import('./feature/auth/oauth2/oauth2-callback.component').then(
+        (m) => m.OAuth2CallbackComponent
+      ),
+  },
   {
     path: 'game/blackjack',
     loadComponent: () => import('./feature/game/blackjack/blackjack.component'),