Add support for word-level audio transcription timestamp granularity

[agcom]

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Describe the change Add support for word-level audio transcription timestamp granularity.

Provide OpenAI documentation link

• timestamp_granularities[]
• words

Describe your solution Added AudioRequest.TimestampGranularities and AudioResponse.Words fields.

Tests Filled AudioRequest.TimestampGranularities field in the existing tests' audio requests.

Additional context

• Related to two-months-abandoned #673, self-closed #680, and self-closed #674.
• Also removed some obsolete comments on AudioRequest fields.

[codecov[bot]]

Codecov Report

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

Project coverage is 98.68%. Comparing base (774fc9d) to head (456ceba). Report is 10 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #733      +/-   ##
==========================================
+ Coverage   98.46%   98.68%   +0.22%     
==========================================
  Files          24       24              
  Lines        1364     1140     -224     
==========================================
- Hits         1343     1125     -218     
+ Misses         15        9       -6     
  Partials        6        6              

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[agcom]

I would have proposed separating transcription and translation request/response types, but that would have been a breaking change.

[sashabaranov]

Thank you for working on this!

[sashabaranov]

@agcom the PR looks good to me in its current state!

I would have proposed separating transcription and translation request/response types, but that would have been a breaking change.

We can discuss it in a separate PR, also totally open to look at a sketch of how this might look like 🙌🏻

[agcom]

@sashabaranov alright then, ready to review. I just wanted to test it out in our development server before marking it for review (did it, and it works fine).

We can discuss it in a separate PR, also totally open to look at a sketch of how this might look like 🙌🏻

May god bless me with more code refactoring tasks so I would work on this :smile:.