feat OTel: added support pool metrics

[KirillKurdyukov]

No description provided.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 57.03704% with 58 lines in your changes missing coverage. Please review.
✅ Project coverage is 71.27%. Comparing base (6922803) to head (14fc8f1).
⚠️ Report is 36 commits behind head on master.

Files with missing lines	Patch %	Lines
...java/tech/ydb/core/metrics/OpenTelemetryMeter.java	0.00%	34 Missing ⚠️
core/src/main/java/tech/ydb/core/metrics/Attr.java	0.00%	7 Missing ⚠️
...in/java/tech/ydb/table/impl/PooledTableClient.java	50.00%	5 Missing ⚠️
...ore/src/main/java/tech/ydb/core/metrics/Meter.java	0.00%	4 Missing ⚠️
...main/java/tech/ydb/query/impl/QueryClientImpl.java	66.66%	2 Missing and 2 partials ⚠️
...main/java/tech/ydb/query/impl/TableClientImpl.java	0.00%	2 Missing ⚠️
...in/java/tech/ydb/core/metrics/DoubleHistogram.java	0.00%	1 Missing ⚠️
...c/main/java/tech/ydb/core/metrics/LongCounter.java	0.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master     #658      +/-   ##
============================================
+ Coverage     71.03%   71.27%   +0.24%     
- Complexity     3352     3386      +34     
============================================
  Files           379      385       +6     
  Lines         15862    16064     +202     
  Branches       1664     1684      +20     
============================================
+ Hits          11267    11450     +183     
- Misses         3950     3961      +11     
- Partials        645      653       +8     

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[github-actions]

🌋 SLO Test Results

🟢 1 workload(s) tested — All thresholds passed

Commit: a040005 · View run

Workload	Thresholds	Duration	Report
java-query-kv	🟢 OK	10m 4s	📄 Report

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