Added persian_stem.

[dblock]

Description

• Added persian_stem token filter.
• Added tests for more token filters. If anyone is bored, placeholders for other filters.

Issues Resolved

Closes #444.

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[github-actions]

Changes Analysis

Commit SHA: a813ecb
Comparing To SHA: 39efae2

API Changes

Summary

└─┬Components
  ├──[➕] schemas (36813:7)
  └─┬_common.analysis:TokenFilterDefinition
    ├──[➕] oneOf (36919:7)
    ├─┬ONEOF
    │ └──[🔀] $ref (36814:9)❌ 
    ├─┬ONEOF
    │ └──[🔀] $ref (37294:9)❌ 
    ├─┬ONEOF
    │ └──[🔀] $ref (35949:9)❌ 
    ├─┬ONEOF
    │ └──[🔀] $ref (35798:9)❌ 
    ├─┬ONEOF
    │ └──[🔀] $ref (36176:9)❌ 
    └─┬ONEOF
      └──[🔀] $ref (35706:9)❌ 

Document Element	Total Changes	Breaking Changes
components	8	6

• ❌ BREAKING Changes: 6 out of 8
• Modifications: 6
• Additions: 2
• Breaking Modifications: 6

Report

The full API changes report is available at: https://github.com/opensearch-project/opensearch-api-specification/actions/runs/11112437110/artifacts/1997224361

API Coverage

	Before	After	Δ
Covered (%)	588 (57.59 %)	588 (57.59 %)	0 (0 %)
Uncovered (%)	433 (42.41 %)	433 (42.41 %)	0 (0 %)
Unknown	29	29	0

[github-actions]

Spec Test Coverage Analysis

Total	Tested
504	303 (60.12 %)