Add speech router and transcribe endpoint

[ReinderVosDeWael]

This pull request adds a new speech router and a transcribe endpoint to the project. The speech router includes the necessary views for handling speech-related requests, and the transcribe endpoint uses OpenAI's Whisper API to transcribe audio files. This feature allows users to convert audio files into text format. The transcribe endpoint accepts audio files and returns the transcription as a string. This PR also includes the necessary dependencies and configurations for the new functionality.

[codecov-commenter]

Codecov Report

Attention: 3 lines in your changes are missing coverage. Please review.

Comparison is base (4017f17) 94.72% compared to head (4800fd9) 94.73%.

Files	Patch %	Lines
src/linguaweb_api/microservices/openai.py	66.66%	2 Missing ⚠️
src/linguaweb_api/routers/speech/controller.py	96.77%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #23      +/-   ##
==========================================
+ Coverage   94.72%   94.73%   +0.01%     
==========================================
  Files          17       19       +2     
  Lines         417      475      +58     
==========================================
+ Hits          395      450      +55     
- Misses         22       25       +3     

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[nx10]

Suggested change

	apt-get install -y ffmpeg && \
	pip install poetry && \
	apt-get install -y ffmpeg
	RUN pip install poetry && \

I'd do separate run layers for apt and pip/poetry so it can cache when poetry breaks (way more likely than apt breaking)