feat: add MCP support (#20716)

Co-authored-by: QuantumGhost <obelisk.reg+git@gmail.com>

api/extensions/ext_blueprints.py

@@ -10,6 +10,7 @@ def init_app(app: DifyApp):
     from controllers.console import bp as console_app_bp
     from controllers.files import bp as files_bp
     from controllers.inner_api import bp as inner_api_bp
+    from controllers.mcp import bp as mcp_bp
     from controllers.service_api import bp as service_api_bp
     from controllers.web import bp as web_bp
 
@@ -46,3 +47,4 @@ def init_app(app: DifyApp):
     app.register_blueprint(files_bp)
 
     app.register_blueprint(inner_api_bp)
+    app.register_blueprint(mcp_bp)