feat: can choose to see synthesized recordings

[nienna73]

What's in this PR:

• add Synthesized audio option
• add UI for synthesized audio option
• add new URL path for audio fetching when synthesized audio option is set to "yes"

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 78.26%. Comparing base (a3612d2) to head (ea16cfa). Report is 531 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #1060 +/- ## ========================================== + Coverage 78.24% 78.26% +0.02% ========================================== Files 151 151 Lines 5397 5402 +5 Branches 865 866 +1 ========================================== + Hits 4223 4228 +5 Misses 1042 1042 Partials 132 132 ```

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