feat(trigger): enhance subscription builder management and update API

- Introduced `SubscriptionBuilderUpdater` class to streamline updates to subscription builders, encapsulating properties like name, parameters, and credentials.
- Refactored API endpoints to utilize the new updater class, improving code clarity and maintainability.
- Adjusted OAuth handling to create and update subscription builders more effectively, ensuring proper credential management.

This change enhances the overall functionality and organization of the trigger subscription builder API.

api/services/plugin/oauth_service.py

@@ -11,7 +11,7 @@ class OAuthProxyService(BasePluginClient):
     __KEY_PREFIX__ = "oauth_proxy_context:"
 
     @staticmethod
-    def create_proxy_context(user_id: str, tenant_id: str, plugin_id: str, provider: str):
+    def create_proxy_context(user_id: str, tenant_id: str, plugin_id: str, provider: str, extra_data: dict = {}):
         """
         Create a proxy context for an OAuth 2.0 authorization request.
 
@@ -26,6 +26,7 @@ class OAuthProxyService(BasePluginClient):
         """
         context_id = str(uuid.uuid4())
         data = {
+            **extra_data,
             "user_id": user_id,
             "plugin_id": plugin_id,
             "tenant_id": tenant_id,