Will remember column visibility and add context menu to table header

[raivisdejus]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 42.10526% with 11 lines in your changes missing coverage. Please review.

Project coverage is 82.02%. Comparing base (6723821) to head (b5920c2).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
buzz/widgets/transcription_tasks_table_widget.py	42.10%	11 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #929      +/-   ##
==========================================
- Coverage   82.18%   82.02%   -0.17%     
==========================================
  Files          85       85              
  Lines        4733     4751      +18     
==========================================
+ Hits         3890     3897       +7     
- Misses        843      854      +11     

Flag	Coverage Δ
Linux	81.60% <42.10%> (-0.17%)	⬇️
macOS	81.89% <42.10%> (-0.17%)	⬇️

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