Audio classification functionality

[wilke0818]

• HuggingFace audio classification using their pipeline
• Adding general speech emotion recognition code
• Testing and documentation for basic classification of emotions

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 90.90909% with 6 lines in your changes missing coverage. Please review.

Please upload report for BASE (release_040@dc9d0c5). Learn more about missing BASE report.

Files	Patch %	Lines
...tasks/classification/speech_emotion_recognition.py	85.71%	6 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## release_040 #76 +/- ## ============================================== Coverage ? 87.46% ============================================== Files ? 46 Lines ? 1691 Branches ? 0 ============================================== Hits ? 1479 Misses ? 212 Partials ? 0 ```

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