chore: make serving config compatible with numaflow-core configs

[BulkBeing]

Closes #2280

[codecov]

Codecov Report

Attention: Patch coverage is 67.79221% with 124 lines in your changes missing coverage. Please review.

Project coverage is 65.54%. Comparing base (10b4978) to head (8673739).
Report is 6 commits behind head on main.

Files with missing lines	Patch %	Lines
rust/serving/src/config.rs	39.50%	49 Missing ⚠️
rust/numaflow-core/src/config/components.rs	0.00%	34 Missing ⚠️
rust/numaflow/src/main.rs	0.00%	20 Missing ⚠️
rust/serving/src/app.rs	92.47%	7 Missing ⚠️
rust/serving/src/lib.rs	0.00%	6 Missing ⚠️
rust/serving/src/app/callback.rs	82.14%	5 Missing ⚠️
rust/serving/src/app/jetstream_proxy.rs	96.66%	2 Missing ⚠️
rust/numaflow-core/src/shared/create_components.rs	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2291      +/-   ##
==========================================
+ Coverage   65.49%   65.54%   +0.05%     
==========================================
  Files         346      346              
  Lines       42394    42614     +220     
==========================================
+ Hits        27764    27933     +169     
- Misses      13560    13613      +53     
+ Partials     1070     1068       -2     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[vigith]

this will go away eventually right? we will directly write to ISB via the pipeline framework.

[BulkBeing]

Yes, for now I'm trying to get it to a working state with minimal changes.