Refactor Code For Better Extensibility

[Sohambutala]

1. Added separate functions for handling yaml configurations, different storage options configuration and handling dynamic execution using extensions.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 17.21854% with 750 lines in your changes missing coverage. Please review.

Project coverage is 40.74%. Comparing base (f85b12e) to head (34400c4).

Files	Patch %	Lines
echodataflow/extensions/file_monitor.py	0.00%	139 Missing :warning:
...chodataflow/stages/subflows/initialization_flow.py	16.21%	124 Missing :warning:
echodataflow/stages/subflows/mask_prediction.py	0.00%	120 Missing :warning:
echodataflow/extensions/file_downloader.py	0.00%	99 Missing :warning:
echodataflow/stages/subflows/Sv_pipeline.py	0.00%	80 Missing :warning:
echodataflow/utils/watchdog_utils.py	0.00%	34 Missing :warning:
deployment/docker_trigger.py	0.00%	30 Missing :warning:
echodataflow/utils/config_utils.py	58.33%	25 Missing :warning:
echodataflow/stages/subflows/slice_store.py	0.00%	22 Missing :warning:
deployment/main.py	0.00%	18 Missing :warning:
... and 12 more

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #128 +/- ## ========================================== - Coverage 50.50% 40.74% -9.76% ========================================== Files 34 41 +7 Lines 2285 3026 +741 ========================================== + Hits 1154 1233 +79 - Misses 1131 1793 +662 ```

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