Add ML Connector APIs

[nathaliellenaa]

Description

Added missing ML Connector APIs.

Issues Resolved

Part of opensearch-project/opensearch-py#867.

ML Connector APIs to add

• GET /_plugins/_ml/connectors/{connector_id}
• GET /_plugins/_ml/connectors/_search
• POST /_plugins/_ml/connectors/_search
• PUT /_plugins/_ml/connectors/{connector_id}

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[github-actions]

Changes Analysis

Commit SHA: 2dd9559
Comparing To SHA: 89aeaa8

API Changes

Summary

├─┬Paths
│ ├──[➕] path (4737:3)
│ ├─┬/_plugins/_ml/connectors/_create
│ │ └─┬POST
│ │   └─┬Requestbody
│ │     └─┬application/json
│ │       └─┬Schema
│ │         └─┬protocol
│ │           ├──[➕] enum (27278:21)
│ │           └──[➕] enum (27279:21)
│ └─┬/_plugins/_ml/connectors/{connector_id}
│   ├──[➕] get (4786:7)
│   └──[➕] put (4801:7)
└─┬Components
  ├──[➕] requestBodies (27409:7)
  ├──[➕] requestBodies (27492:7)
  ├──[➕] responses (30604:7)
  ├──[➕] responses (30693:7)
  ├──[➕] responses (30657:7)
  ├──[➕] parameters (23043:7)
  ├──[➕] parameters (23091:7)
  ├──[➕] schemas (54354:7)
  ├──[➕] schemas (54670:7)
  └─┬ml._common___Source
    ├──[➕] properties (54911:9)
    ├──[➕] properties (54909:9)
    └──[➕] properties (54903:9)

Document Element	Total Changes	Breaking Changes
paths	5	0
components	12	0

• Total Changes: 17
• Additions: 17

Report

The full API changes report is available at: https://github.com/opensearch-project/opensearch-api-specification/actions/runs/12604995766/artifacts/2384698650

API Coverage

	Before	After	Δ
Covered (%)	612 (59.94 %)	616 (60.33 %)	4 (0.39 %)
Uncovered (%)	409 (40.06 %)	405 (39.67 %)	-4 (-0.39 %)
Unknown	43	43	0

[github-actions]

Spec Test Coverage Analysis

Total	Tested
546	546 (100 %)

[Tokesh]

LGTM, Great job, Thank you :)