Add live transcript export

[raivisdejus]

This will let us use Buzz to generate live transcriptions for OBS

[codecov]

Codecov Report

Attention: Patch coverage is 96.42857% with 2 lines in your changes missing coverage. Please review.

Project coverage is 84.06%. Comparing base (5904f84) to head (4c27407).

Files	Patch %	Lines
buzz/recording.py	0.00%	1 Missing ⚠️
buzz/widgets/recording_transcriber_widget.py	94.44%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #784      +/-   ##
==========================================
+ Coverage   82.61%   84.06%   +1.45%     
==========================================
  Files          83       83              
  Lines        3958     4011      +53     
==========================================
+ Hits         3270     3372     +102     
+ Misses        688      639      -49     

Flag	Coverage Δ
Linux	82.22% <96.42%> (+1.55%)	⬆️
macOS	82.29% <76.78%> (+0.21%)	⬆️

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