feat: reset oauth ids (#20798)

server/src/services/auth-admin.service.ts

@@ -0,0 +1,11 @@
+import { Injectable } from '@nestjs/common';
+import { AuthDto } from 'src/dtos/auth.dto';
+import { BaseService } from 'src/services/base.service';
+
+@Injectable()
+export class AuthAdminService extends BaseService {
+  async unlinkAll(_auth: AuthDto) {
+    // TODO replace '' with null
+    await this.userRepository.updateAll({ oauthId: '' });
+  }
+}