ci: Set up release pipeline

.github/workflows/release.yml

@@ -0,0 +1,71 @@
+name: Publish a release
+
+on:
+  workflow_dispatch:
+    inputs:
+      release_type:
+        required: true
+        type: choice
+        options:
+          - patch
+          - minor
+          - major
+
+env:
+  PR_BRANCH: release-ci-${{ github.sha }}
+
+jobs:
+
+  prepare_metadata:
+    runs-on: ubuntu-latest
+    outputs:
+      version: ${{ steps.bump_version.outputs.version }}
+      release_sha: ${{ steps.merge_pr.outputs.sha }}
+    permissions:
+      contents: write
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Set up git
+        run: |
+          git config --global user.email "[email protected]"
+          git config --global user.name "Jan Buchar"
+      - name: Create branch
+        run: |
+          git switch -c ${{ env.PR_BRANCH }}
+      - name: Bump version in package.json
+        id: bump_version
+        run: |
+          npm version ${{ github.event.inputs.release_type }}
+          echo version=$( node -p "require('./package.json').version" ) >> "$GITHUB_OUTPUT"
+          git push --set-upstream origin ${{ env.PR_BRANCH }}
+      - name: Create PR
+        run: |
+          gh pr create \
+            --base master \
+            --head ${{ env.PR_BRANCH }} \
+            --title "chore: Release ${{ steps.bump_version.outputs.version }} [skip-ci]" \
+            --body "Automated pull request - update to ${{ steps.bump_version.outputs.version }}"
+        env:
+          GH_TOKEN: ${{ github.token }}
+      - name: Approve and merge PR
+        id: merge_pr
+        run: |
+          gh pr review --approve ${{ env.PR_BRANCH }}
+          gh pr merge --squash --auto --delete-branch ${{ env.PR_BRANCH }}
+          echo sha=$( gh pr view --json mergeCommit ${{ env.PR_BRANCH }} | jq --raw-output .mergeCommit.oid ) >> "$GITHUB_OUTPUT"
+        env:
+          GH_TOKEN: ${{ secrets.PERSONAL_TOKEN }}
+
+  gh_release:
+    runs-on: ubuntu-latest
+    needs: prepare_metadata
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Create release
+        uses: softprops/action-gh-release@v2
+        with:
+          tag_name: release-${{ needs.prepare_metadata.outputs.version }}
+          name: Release ${{ needs.prepare_metadata.outputs.version }}
+          target_commitish: ${{ needs.prepare_metadata.outputs.release_sha }}