ci: cd production version [SFUI2-1185] (#2839)

once any commit lands into v2 branch yarn changeset publish of package should happen
if error happens, exit - do nothing
if no error, then create automatically PR with changes (changelog) v2 -> v2-develop
if no conflicts then automerge
if conflict resolve it manually
in any case of adding extra commit, PR action rerun and if no conflicts, the will automerge

.github/workflows/cd-v2-automerge.yml

@@ -0,0 +1,25 @@
+name: Helper - Auto-merge PR with `automerge` label
+on:
+  pull_request:
+    types:
+      - opened
+      - labeled
+      - reopened
+      - synchronize
+      - ready_for_review
+      - edited
+    branches:
+      - v2-develop
+
+jobs:
+  automerge:
+    runs-on: ubuntu-latest
+    if: ${{ startsWith(github.head_ref, 'v2' )}}
+    steps:
+      - name: Checkout repo
+        uses: actions/checkout@v3
+      - id: automerge
+        name: automerge
+        uses: 'pascalgn/[email protected]'
+        env:
+          GITHUB_TOKEN: '${{ secrets.GITHUB_TOKEN }}'

.github/workflows/cd-v2-publish-and-create-pr.yml

@@ -0,0 +1,37 @@
+name: Publish prod version and create sync PR
+on:
+  push:
+    branches:
+      - v2
+
+jobs:
+  publish-and-create-pr:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repo
+        uses: actions/checkout@v3
+      - name: Install Node.js
+        uses: actions/setup-node@v3
+        with:
+          node-version-file: '.node-version'
+          cache: 'yarn'
+          registry-url: 'https://registry.npmjs.org'
+      - name: Install dependencies
+        run: yarn --immutable
+      - name: Publish Production version
+        # run: yarn changeset publish
+        run: echo publish package
+        env:
+          # Needs access to publish to npm
+          # refresh token before Saturday, May 25, 2024
+          NPM_TOKEN: ${{ secrets.NPM_RELEASE_TOKEN }}
+          NODE_AUTH_TOKEN: ${{ secrets.NPM_RELEASE_TOKEN }}
+      - name: Create PR to develop
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          gh pr create -B v2-develop --title 'chore: automatic Sync v2->v2-develop PR' --body 'This Pull Request is generated automatically with changes pushed into `v2` branch. `v2` and `v2-develop` branches should be in-sync.' --label automerge || true
+      - name: Merge created PR
+        env:
+          GH_TOKEN: ${{ github.token }}
+        run: gh pr merge --auto --merge