feat: support both base conf and app conf

[ab93]

• Add support for base config and app config merge
• Throw an error if no conf exists
• Paths can be altered using env vars

[codecov]

Codecov Report

Attention: 18 lines in your changes are missing coverage. Please review.

Comparison is base (c967f20) 94.19% compared to head (6c99575) 93.78%.
Report is 1 commits behind head on main.

Files	Patch %	Lines
numalogic/udfs/trainer/_prom.py	60.00%	14 Missing ⚠️
numalogic/connectors/redis.py	33.33%	1 Missing and 1 partial ⚠️
numalogic/udfs/__main__.py	87.50%	1 Missing ⚠️
numalogic/udfs/trainer/_base.py	50.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #328      +/-   ##
==========================================
- Coverage   94.19%   93.78%   -0.42%     
==========================================
  Files          76       79       +3     
  Lines        3482     3570      +88     
  Branches      282      292      +10     
==========================================
+ Hits         3280     3348      +68     
- Misses        157      176      +19     
- Partials       45       46       +1     

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[sarabala1979]

@ab93 Will Code load the new file if there is a config change?
similar numaproj/numalogic-prometheus#119

[ab93]

@ab93 Will Code load the new file if there is a config change? similar numaproj/numalogic-prometheus#119

@sarabala1979 no it won't here. Added a new issue to track it.