ci: add two ci jobs (#48)

* ci: py project job

* ci: backport job

.github/workflows/backport.yml

@@ -0,0 +1,20 @@
+name: backport
+
+# backport by issue a label (backport <target branch>) on merged PR 
+
+on:
+  pull_request_target:
+    types: [closed, labeled]
+jobs:
+  backport:
+    permissions:
+      contents: write # so it can comment
+      pull-requests: write # so it can create pull requests
+    name: Backport Pull Request
+    if: github.event.pull_request.merged
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Create backport PRs
+        uses: korthout/backport-action@v2

.github/workflows/py.yml

@@ -0,0 +1,46 @@
+name: Python package
+
+# necessary check for Python project, publish to PyPI performed locally
+
+on:
+  push:
+    branches:
+      - main
+    tags:
+      - v*
+  pull_request:
+  workflow_dispatch:
+
+jobs:
+  py-package:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - run: |
+          pip install --no-cache-dir poetry
+
+      - name: verify
+        if: startsWith(github.ref, 'refs/tags/v')
+        run: |
+          py_version=$(poetry version --short)
+          VERSION=$(echo "${{ github.ref }}" | sed -e 's,.*/\(.*\),\1,')
+          tag_version=${VERSION#v}
+          if [[ $py_version != $tag_version ]] ; then
+            echo "publish version does not match, $py_version vs $tag_version"
+            exit 1
+          fi
+
+      - name: build
+        run: |
+          poetry install
+          poetry build
+
+      - name: Release
+        uses: softprops/action-gh-release@v1
+        if: startsWith(github.ref, 'refs/tags/v')
+        with:
+          files: |
+            ./openmldb_mixin/openmldb_dashboard.json
+