Feature: Gateway Permission Tiers — Role-Based Access Control (Owner/Admin/User/Guest) for Messenger Platforms

#527 Workaround P2 comp/gateway

Feature: Gateway Permission Tiers — Role-Based Access Control (Owner/Admin/User/Guest) for Messenger Platforms

This issue reports that Hermes Agent's gateway authorization is currently all-or-nothing, and proposes a tiered permission system (Owner/Admin/User/Guest) for messaging platforms.