Campsite + Retell AI Integration

Keep Campsite and Retell AI aligned: when communication events happen in one, update the other automatically.

Example: when Retell AI's "Watch Calls" fires, WEXTL can "Create a DM Message" in Campsite. Campsite has 12 actions (including Create a DM Message, Create a Message, and Create a Post); Retell AI has 5 actions (including Create a Phone Call, Create a Web Call, and Get a Call).