Refactor freqman_db parsing (#1244)

* WIP freqman changes/memory perf/stash
* Split ui tone_key function out for testing.
* Add more tests and fix bugs.
* Use default max_entries in recond
* Set limit back to 90 for now

firmware/application/apps/ui_mictx.hpp

@@ -35,7 +35,6 @@
 #include "ui_navigation.hpp"
 #include "ui_receiver.hpp"
 #include "transmitter_model.hpp"
-#include "tone_key.hpp"
 #include "message.hpp"
 #include "receiver_model.hpp"
 #include "ui_transmitter.hpp"