feat(.github/actions): add new job for weekly release

Author: sambhav-jain-16

.github/workflows/release.yml

@@ -0,0 +1,75 @@
+name: Weekly Release
+
+on:
+  # TODO(sambhav-jain-16): enable the schedule after testing manually
+  # schedule:
+  #   - cron: '0 0 * * 1'  # Every Monday at 00:00 UTC
+  workflow_dispatch:
+    inputs:
+      release_type:
+        description: 'Bump type for this run. auto = detect from merged PR bodies (release-type: minor/major), falling back to patch.'
+        required: false
+        type: choice
+        options:
+          - auto
+          - patch
+          - minor
+          - major
+        default: auto
+
+permissions:
+  contents: write
+
+concurrency:
+  group: release
+  cancel-in-progress: false
+
+jobs:
+  release:
+    name: Create Release
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Check for new commits since last tag
+        id: check
+        run: |
+          LATEST=$(git describe --tags --abbrev=0 2>/dev/null || echo "")
+          if [ -z "$LATEST" ]; then
+            COUNT=$(git rev-list HEAD --count)
+          else
+            COUNT=$(git rev-list "${LATEST}..HEAD" --count)
+          fi
+          if [ "$COUNT" -gt 0 ]; then
+            echo "has_changes=true" >> "$GITHUB_OUTPUT"
+          else
+            echo "has_changes=false" >> "$GITHUB_OUTPUT"
+            echo "No commits since ${LATEST}, skipping release."
+          fi
+
+      - name: Bump version and create tag
+        id: tag
+        if: steps.check.outputs.has_changes == 'true'
+        uses: mathieudutour/github-tag-action@v6.2
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          default_bump: ${{ (github.event.inputs.release_type == 'auto' || github.event.inputs.release_type == '') && 'patch' || github.event.inputs.release_type }}
+          major_string_token: 'release-type: major'
+          minor_string_token: 'release-type: minor'
+          patch_string_token: 'release-type: patch'
+          with_v: true
+          release_branches: master
+
+      - name: Create GitHub release
+        if: steps.check.outputs.has_changes == 'true'
+        uses: softprops/action-gh-release@v3
+        with:
+          tag_name: ${{ steps.tag.outputs.new_tag }}
+          name: Release ${{ steps.tag.outputs.new_tag }}
+          generate_release_notes: true
+
+      - name: No new commits, skipping release
+        if: steps.check.outputs.has_changes == 'false'
+        run: echo "Skipping — no commits since last tag."