chore: auto tagging after release pr is merged (#3135)

Signed-off-by: Jaydip Gabani <gabanijaydip@gmail.com>
Co-authored-by: Sertaç Özercan <852750+sozercan@users.noreply.github.com>

.github/workflows/release-pr.yaml

@@ -85,3 +85,6 @@ jobs:
           branch: "release-${{ env.NEWVERSION }}"
           base: "${{ env.TARGET_BRANCH }}"
           signoff: true
+          labels: |
+            release-pr
+            ${{ github.event.inputs.release_version }}

.github/workflows/tag.yaml

@@ -0,0 +1,28 @@
+name: create_tag
+on: 
+  pull_request:
+    types: [closed]
+
+permissions:
+  contents: write
+
+jobs:
+  create_tag:
+    name: "Create tag"
+    if: github.event.pull_request.merged == true && contains(github.event.pull_request.labels.*.name, 'release-pr') && startsWith(github.event.pull_request.title, format('chore{0} Prepare', ':'))
+    runs-on: ubuntu-22.04
+    steps:
+    - name: "Set release tag"
+      env:
+        GITHUB_CONTEXT: ${{ toJson(github.event.pull_request.labels.*.name) }}
+      run: |
+        RELEASE_TAG=$(echo "$GITHUB_CONTEXT" | jq '.[1]' | tr -d '"')
+        echo "RELEASE_TAG=$RELEASE_TAG" >> $GITHUB_ENV
+    
+    - name: Check out code
+      uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v3.5.2
+
+    - uses: rickstaa/action-create-tag@861755f3fcbce1b21a65c17bad10e7d35c27b6d9 #v1.7.1
+      with:
+        tag: ${{ env.RELEASE_TAG }}
+        tag_exists_error: false