Port @azure/postgresql-auth package from postgres-entra-auth repo

Migrates the standalone azure-postgresql-auth library into the monorepo as
@azure/postgresql-auth, providing Entra ID authentication for PostgreSQL
connections via both pg (node-postgres) and Sequelize clients.

- getEntraTokenPassword() - acquires Entra ID token for PostgreSQL password
- configureEntraIdAuth() - registers Sequelize beforeConnect hook
- Uses warp build system with 4 targets (browser, react-native, esm, commonjs)
- 19 unit tests with vitest
- Optional peer deps: pg (>=8.0.0), sequelize (>=6.0.0)
- CI pipeline and CODEOWNERS updated

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: KarishmaGhiya

.github/CODEOWNERS

@@ -837,6 +837,9 @@
 # PRLabel: %Mgmt
 /sdk/policyinsights/arm-policyinsights/ @qiaozha @MaryGao @JialinHuang803
 
+# PRLabel: %Postgresql
+/sdk/postgresql/postgresql-auth/ @maorleger @jeremymeng
+
 # PRLabel: %Mgmt
 /sdk/postgresql/arm-postgresql/ @qiaozha @MaryGao @JialinHuang803
 

pnpm-lock.yaml

@@ -0,0 +1,32 @@
+# NOTE: Please refer to https://aka.ms/azsdk/engsys/ci-yaml before editing this file.
+
+trigger:
+  branches:
+    include:
+      - main
+      - release/*
+      - hotfix/*
+  paths:
+    include:
+      - sdk/postgresql/ci.yml
+      - sdk/postgresql/postgresql-auth
+pr:
+  branches:
+    include:
+      - main
+      - feature/*
+      - release/*
+      - hotfix/*
+    exclude:
+      - feature/v4
+  paths:
+    include:
+      - sdk/postgresql/ci.yml
+      - sdk/postgresql/postgresql-auth
+extends:
+  template: /eng/pipelines/templates/stages/archetype-sdk-client.yml
+  parameters:
+    ServiceDirectory: postgresql
+    Artifacts:
+      - name: azure-postgresql-auth
+        safeName: azurepostgresqlauth

sdk/postgresql/ci.yml

@@ -0,0 +1,15 @@
+# Release History
+
+## 1.0.0-beta.1 (Unreleased)
+
+### Features Added
+
+- Added `getEntraTokenPassword` function for acquiring Entra ID tokens as PostgreSQL passwords.
+- Added `configureEntraIdAuth` function for automatic Sequelize Entra ID authentication via `beforeConnect` hook.
+- Support for `pg` (node-postgres) and Sequelize clients as optional peer dependencies.
+
+### Breaking Changes
+
+### Bugs Fixed
+
+### Other Changes

sdk/postgresql/postgresql-auth/CHANGELOG.md

@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2025 Microsoft
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.