Licensed usage compliance (#6047)

* Prevent psk and legacy admin channel on licensed mode

* Move it

* Consolidate warning strings

* More holes

src/mesh/Channels.h

@@ -92,6 +92,8 @@ class Channels
     // Returns true if any of our channels have enabled MQTT uplink or downlink
     bool anyMqttEnabled();
 
+    bool ensureLicensedOperation();
+
   private:
     /** Given a channel index, change to use the crypto key specified by that index
      *