add: druidfetcher support for different configId

[s0nicboOm]

Update config to support multiple DruidFetcher

[codecov[bot]]

Codecov Report

Merging #307 (03134fc) into main (f25f49a) will decrease coverage by 0.07%. The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #307      +/-   ##
==========================================
- Coverage   93.99%   93.93%   -0.07%     
==========================================
  Files          77       77              
  Lines        3483     3495      +12     
  Branches      279      280       +1     
==========================================
+ Hits         3274     3283       +9     
- Misses        158      160       +2     
- Partials       51       52       +1     

Files	Coverage Δ
numalogic/connectors/_config.py	97.61% <100.00%> (+0.05%)	:arrow_up:
numalogic/tools/types.py	93.54% <100.00%> (ø)
numalogic/udfs/trainer.py	92.41% <100.00%> (+0.62%)	:arrow_up:

... and 1 file with indirect coverage changes

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