Highlight elements in binds editor

[lukaszsmolinski]

Highlights buttons and knobs in the binds editor when user interacts with them on a controller.

Depends on #66 and should be merged after it.

[codecov]

Codecov Report

Attention: Patch coverage is 6.31579% with 89 lines in your changes are missing coverage. Please review.

Project coverage is 38.16%. Comparing base (c620dbc) to head (a46d661).

Files	Patch %	Lines
midi_app_controller/gui/binds_editor.py	0.00%	66 Missing ⚠️
..._app_controller/controller/connected_controller.py	16.00%	21 Missing ⚠️
midi_app_controller/gui/midi_status.py	0.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #68      +/-   ##
==========================================
- Coverage   40.35%   38.16%   -2.19%     
==========================================
  Files          14       14              
  Lines         969     1035      +66     
==========================================
+ Hits          391      395       +4     
- Misses        578      640      +62     

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[Aleshkev]

As it is now, it crashes when saving binds