Introduce Serbian analyzer

[velizarvel]

Serbian Analyzer enables users who work with the Serbian language to achieve better performance in text search and indexing. This analyzer uses specific tokenization and filtering rules tailored to the Serbian language, resulting in more accurate search results. Since Serbian Analyzer is already supported in the Apache Lucene library, its introduction into OpenSearch ensures compatibility and extends user capabilities.

[github-actions]

❌ Gradle check result for 4b41c2a: FAILURE

Please examine the workflow log, locate, and copy-paste the failure(s) below, then iterate to green. Is the failure a flaky test unrelated to your change?

[github-actions]

❌ Gradle check result for 1812901: FAILURE

Please examine the workflow log, locate, and copy-paste the failure(s) below, then iterate to green. Is the failure a flaky test unrelated to your change?

[github-actions]

❌ Gradle check result for e7194cf: FAILURE

Please examine the workflow log, locate, and copy-paste the failure(s) below, then iterate to green. Is the failure a flaky test unrelated to your change?

[github-actions]

❌ Gradle check result for 8f401e6: FAILURE

Please examine the workflow log, locate, and copy-paste the failure(s) below, then iterate to green. Is the failure a flaky test unrelated to your change?

[github-actions]

✅ Gradle check result for b1896da: SUCCESS

[codecov]

Codecov Report

Attention: Patch coverage is 27.27273% with 8 lines in your changes missing coverage. Please review.

Project coverage is 71.65%. Comparing base (2be25bb) to head (b1896da).
Report is 257 commits behind head on main.

Files with missing lines	Patch %	Lines
...earch/analysis/common/SerbianAnalyzerProvider.java	0.00%	6 Missing ⚠️
...rch/analysis/common/StemmerTokenFilterFactory.java	0.00%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main   #14571      +/-   ##
============================================
- Coverage     71.71%   71.65%   -0.07%     
+ Complexity    62179    62173       -6     
============================================
  Files          5125     5126       +1     
  Lines        292444   292455      +11     
  Branches      42257    42258       +1     
============================================
- Hits         209720   209552     -168     
- Misses        65434    65653     +219     
+ Partials      17290    17250      -40     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[andrross]

This is a new file so it doesn't need an Elasticsearch license. The license header above this one is sufficient.

Can you also please confirm that this is not a copy of any non-open-source-APLv2-elasticsearch code?

[velizarvel]

I agree with your assessment and will update the file accordingly.
I am not entirely sure how to verify non-open-source-APLv2-elasticsearch code on my own and would appreciate your confirmation to ensure everything is compliant.

[opensearch-trigger-bot]

This PR is stalled because it has been open for 30 days with no activity.

[opensearch-trigger-bot]

This PR is stalled because it has been open for 30 days with no activity.

[dblock]

@velizarvel want to finish this?

[velizarvel]

@dblock yes, I would like to finish. Thank you for checking in!