chore: add github workflows

.github/workflows/release-drafter.yml

+name: Release Drafter
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  draft_release:
+    name: Draft release
+    runs-on: ubuntu-latest
+    steps:
+      - uses: release-drafter/release-drafter@v5.11.0
+        name: Draft
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}