Implement HTTP/2 IDLE based eviction

[TharmiganK]

Purpose

Fixes: ballerina-platform/ballerina-library#7309

Examples

Refer to the attached issue

Checklist

• Linked to an issue
• Updated the changelog
• Added tests
• Updated the spec
• Checked native-image compatibility
• Checked the impact on OpenAPI generation

[codecov]

Codecov Report

Attention: Patch coverage is 90.69767% with 4 lines in your changes missing coverage. Please review.

Project coverage is 79.96%. Comparing base (0d1c9f5) to head (8d18ce1).

Files with missing lines	Patch %	Lines
...tractimpl/sender/http2/Http2ConnectionManager.java	89.18%	2 Missing and 2 partials ⚠️

❌ Your project check has failed because the head coverage (79.96%) is below the target coverage (80.00%). You can increase the head coverage or adjust the target coverage.

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #2277      +/-   ##
============================================
- Coverage     80.40%   79.96%   -0.45%     
- Complexity        0      678     +678     
============================================
  Files           367      418      +51     
  Lines         20757    23157    +2400     
  Branches       3294     3757     +463     
============================================
+ Hits          16690    18517    +1827     
- Misses         3133     3508     +375     
- Partials        934     1132     +198     

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[sonarqubecloud]

Quality Gate passed

Issues
5 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud