[Backport 2.x] Added session, statement, emrjob metrics to sql stats api

[opensearch-trigger-bot]

Backport 940980e from #2398.

[codecov]

Codecov Report

Merging #2399 (94503d3) into 2.x (834a7d0) will decrease coverage by 0.08%.
The diff coverage is 62.50%.

@@             Coverage Diff              @@
##                2.x    #2399      +/-   ##
============================================
- Coverage     95.67%   95.60%   -0.08%     
  Complexity     5022     5022              
============================================
  Files           479      479              
  Lines         14021    14050      +29     
  Branches        933      934       +1     
============================================
+ Hits          13415    13432      +17     
- Misses          586      598      +12     
  Partials         20       20              

Flag	Coverage Δ
sql-engine	95.60% <62.50%> (-0.08%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
...ces/transport/TransportCreateDataSourceAction.java	100.00% <100.00%> (ø)
...ces/transport/TransportDeleteDataSourceAction.java	100.00% <100.00%> (ø)
...ources/transport/TransportGetDataSourceAction.java	100.00% <100.00%> (ø)
...rces/transport/TransportPatchDataSourceAction.java	100.00% <100.00%> (ø)
...ces/transport/TransportUpdateDataSourceAction.java	100.00% <100.00%> (ø)
...arch/sql/spark/client/EmrServerlessClientImpl.java	100.00% <100.00%> (ø)
...search/sql/spark/dispatcher/BatchQueryHandler.java	100.00% <100.00%> (ø)
.../sql/spark/dispatcher/InteractiveQueryHandler.java	100.00% <100.00%> (ø)
...ch/sql/spark/dispatcher/StreamingQueryHandler.java	100.00% <100.00%> (ø)
...ql/datasources/rest/RestDataSourceQueryAction.java	0.00% <0.00%> (ø)
... and 1 more