adding speech enhancement task

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 27.22772% with 294 lines in your changes missing coverage. Please review.

Please upload report for BASE (release_050@2828a9a). Learn more about missing BASE report.

Files	Patch %	Lines
src/tests/audio/tasks/voice_cloning_test.py	1.85%	53 Missing :warning:
src/tests/audio/tasks/speaker_embeddings_test.py	3.70%	52 Missing :warning:
...elab/audio/tasks/speech_enhancement/speechbrain.py	0.00%	33 Missing :warning:
src/tests/audio/tasks/speech_enhancement_test.py	5.88%	32 Missing :warning:
src/tests/audio/tasks/speaker_diarization_test.py	6.66%	28 Missing :warning:
src/tests/audio/tasks/speech_to_text_test.py	7.69%	24 Missing :warning:
src/tests/audio/tasks/features_extraction_test.py	52.27%	21 Missing :warning:
src/tests/audio/tasks/classification_test.py	18.75%	13 Missing :warning:
src/senselab/audio/tasks/speech_enhancement/api.py	0.00%	11 Missing :warning:
...tests/audio/tasks/voice_activity_detection_test.py	33.33%	8 Missing :warning:
... and 5 more

Additional details and impacted files

```diff @@ Coverage Diff @@ ## release_050 #78 +/- ## ============================================== Coverage ? 65.81% ============================================== Files ? 54 Lines ? 1875 Branches ? 0 ============================================== Hits ? 1234 Misses ? 641 Partials ? 0 ```

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