Add workflows for automatic PRs on release-fix and release-integration branches, Fixes AB#3370366 (#2833)

This pull request introduces two new GitHub Actions workflows to
automate the process of opening pull requests when specific
release-related branches are created. These workflows help streamline
the integration of release fixes and release integration branches by
automatically creating pull requests targeting the appropriate base
branches.

**Automated Pull Request Workflows:**

* Added `.github/workflows/integration/release-fix.yml` to automatically
open a pull request from any newly created `release-fix/*` branch to the
corresponding `release/<version>` branch. This includes logic to extract
the version from the branch name and set the PR title and body
accordingly.
* Added `.github/workflows/integration/release-integration.yml` to
automatically open a pull request from any newly created
`release-integration/*` branch to the `dev` branch, with a standardized
PR title and body.



[AB#3370366](https://identitydivision.visualstudio.com/fac9d424-53d2-45c0-91b5-ef6ba7a6bf26/_workitems/edit/3370366)

Author: p3dr0rv

.github/workflows/integration/release-fix.yml

@@ -0,0 +1,50 @@
+##
+# Workflow: release-fix auto PR
+# Purpose: When a `release-fix/*` branch is created, automatically
+#          open a pull request targeting the corresponding `release/<version>` branch.
+# Maintainer: Android Team - Release Engineering
+# Docs: See repository CONTRIBUTING.md for release process guidance
+##
+name: Auto PR to merge release-fix branches into release
+
+permissions:
+  contents: read
+  pull-requests: write
+
+on:
+  create:
+
+jobs:
+  create-pr:
+    if: >
+      github.event.ref_type == 'branch' &&
+      startsWith(github.event.ref, 'release-fix/') &&
+      vars.ENABLE_RELEASE_AUTOMATION == 'true'
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Compute target release version
+        id: compute_version
+        run: |
+          BRANCH_NAME="${{ github.event.ref }}"
+          if [[ "$BRANCH_NAME" =~ ^release-fix/(.+)$ ]]; then
+            VERSION="${BASH_REMATCH[1]}"
+            echo "version=$VERSION" >> $GITHUB_OUTPUT
+            echo "Computed version: $VERSION"
+          else
+            echo "Failed to compute version from branch: $BRANCH_NAME"
+            exit 1
+          fi
+
+      - name: Create Pull Request
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          gh pr create \
+            --base "release/${{ steps.compute_version.outputs.version }}" \
+            --head "${{ github.event.ref }}" \
+            --title "Auto PR: ${{ github.event.ref }} → release/${{ steps.compute_version.outputs.version }}" \
+            --body "This is an automated pull request created to integrate release changes into release/${{ steps.compute_version.outputs.version }}. Triggered when the branch ${{ github.event.ref }} was published."

.github/workflows/integration/release-integration.yml

@@ -0,0 +1,38 @@
+##
+# Workflow: release-integration auto PR
+# Purpose: When a `release-integration/*` branch is created, automatically
+#          open a pull request targeting `dev` to integrate release changes.
+##
+name: Auto PR to dev for release-integration branches
+
+permissions:
+  contents: read
+  pull-requests: write
+
+on:
+  create:
+
+concurrency:
+  group: auto-pr-release-integration-${{ github.event.ref }}
+  cancel-in-progress: false
+
+jobs:
+  create-pr:
+    if: >
+      github.event.ref_type == 'branch' &&
+      startsWith(github.event.ref, 'release-integration/') &&
+      vars.ENABLE_RELEASE_AUTOMATION == 'true'
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v4
+    - name: Create Pull Request
+      env:
+        GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      run: |
+        gh pr create \
+          --base dev \
+          --head "${{ github.event.ref }}" \
+          --title "Auto PR: ${{ github.event.ref }} → dev" \
+          --body "This is an automated pull request created to integrate release changes into **dev**. Triggered when the branch **${{ github.event.ref }}** was published."