Make google auth optional on server side (#508)

* Make google auth optional on server side

* fix lint

* Fix according to review

server/src/core/auth/guards/google-provider-enabled.guard.ts

@@ -0,0 +1,14 @@
+import { Injectable, CanActivate, HttpException } from '@nestjs/common';
+import { Observable } from 'rxjs';
+import { EnvironmentService } from 'src/integrations/environment/environment.service';
+
+@Injectable()
+export class GoogleProviderEnabledGuard implements CanActivate {
+  constructor(private readonly environmentService: EnvironmentService) {}
+  canActivate(): boolean | Promise<boolean> | Observable<boolean> {
+    if (!this.environmentService.getAuthGoogleEnabled()) {
+      throw new HttpException('Google auth is not enabled', 404);
+    }
+    return true;
+  }
+}