feat: enhance repeater TX mode functionality so companion tenants can TX while in monitor mode

- Modify TX modes: forward, monitor, and add no_tx, allowing for flexible packet handling.
- Updated configuration and API endpoints to support the new modes.
- Adjusted logic in RepeaterHandler to manage packet processing based on the selected mode.
- Enhanced CLI commands to reflect the new mode settings.
- Added tests for each TX mode to ensure correct behavior.

repeater/handler_helpers/repeater_cli.py

@@ -242,8 +242,8 @@ class MeshCLI:
             return f"> {name}"
 
         elif param == "repeat":
-            disabled = self.repeater_config.get("disable_forward", False)
-            return f"> {'off' if disabled else 'on'}"
+            mode = self.repeater_config.get("mode", "forward")
+            return f"> {'on' if mode == 'forward' else 'off'}"
 
         elif param == "lat":
             lat = self.repeater_config.get("latitude", 0.0)
@@ -350,10 +350,9 @@ class MeshCLI:
                 return "OK"
 
             elif key == "repeat":
-                disabled = value.lower() == "off"
-                self.repeater_config["disable_forward"] = disabled
+                self.repeater_config["mode"] = "forward" if value.lower() == "on" else "monitor"
                 self.save_config()
-                return f"OK - repeat is now {'OFF' if disabled else 'ON'}"
+                return f"OK - repeat is now {'ON' if self.repeater_config['mode'] == 'forward' else 'OFF'}"
 
             elif key == "lat":
                 self.repeater_config["latitude"] = float(value)