Add Google credentials provider for authenticating with MCP servers (#4748)

packages/core/src/config/config.ts

@@ -118,9 +118,15 @@ export class MCPServerConfig {
     readonly extensionName?: string,
     // OAuth configuration
     readonly oauth?: MCPOAuthConfig,
+    readonly authProviderType?: AuthProviderType,
   ) {}
 }
 
+export enum AuthProviderType {
+  DYNAMIC_DISCOVERY = 'dynamic_discovery',
+  GOOGLE_CREDENTIALS = 'google_credentials',
+}
+
 export interface SandboxConfig {
   command: 'docker' | 'podman' | 'sandbox-exec';
   image: string;