Forward index endpoints

[tanghel]

Proposed Changes

• To ease with debugging, offer the possibility to access the ES instance that sits behind the api

How to test

• GET /index/logs/_search should return logs
• GET /index/logs/_count should return logs count
• POST /index/logs/_search should return logs with query params set in body
• POST /index/logs/_count should return logs count with query params set in body

[codecov]

Codecov Report

Attention: Patch coverage is 53.33333% with 14 lines in your changes are missing coverage. Please review.

Project coverage is 46.34%. Comparing base (d5dc553) to head (2e7bd61).
Report is 1 commits behind head on development.

Files	Patch %	Lines
src/endpoints/proxy/index.proxy.controller.ts	44.00%	14 Missing ⚠️

Additional details and impacted files

@@               Coverage Diff               @@
##           development    #1223      +/-   ##
===============================================
- Coverage        46.36%   46.34%   -0.02%     
===============================================
  Files              593      594       +1     
  Lines            15782    15834      +52     
  Branches          1685     1687       +2     
===============================================
+ Hits              7318     7339      +21     
- Misses            6842     6871      +29     
- Partials          1622     1624       +2     

Flag	Coverage Δ
unittests	46.34% <53.33%> (-0.02%)	⬇️

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