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

Additional details and impacted files

@@            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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