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_freqman.hpp

@@ -116,7 +116,6 @@ class FrequencyLoadView : public FreqManBaseView {
     std::function<void(rf::Frequency, rf::Frequency)> on_range_loaded{};
 
     FrequencyLoadView(NavigationView& nav);
-    ~FrequencyLoadView();
 
     std::string title() const override { return "Load freq."; };