build: add release workflow

.github/workflows/release.yml

@@ -0,0 +1,51 @@
+name: Release
+
+on:
+  push:
+    tags:
+      - "*.*.*"
+
+jobs:
+  Release:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Get tag
+        id: tag
+        run: echo ::set-output name=tag::${GITHUB_REF#refs/tags/}
+
+      - name: Set up Python 3.8
+        uses: actions/setup-python@v2
+        with:
+          python-version: "3.8"
+
+      - name: Install Poetry
+        run: curl -sSL https://raw.githubusercontent.com/python-poetry/poetry/master/install-poetry.py | python -
+
+      - name: Update PATH
+        run: echo "$HOME/.local/bin" >> $GITHUB_PATH
+
+      - name: Build project for distribution
+        run: poetry build
+
+      - name: Check Version
+        id: check-version
+        run: |
+          [[ "$(poetry version --short)" =~ ^[0-9]+\.[0-9]+\.[0-9]+$ ]] \
+            || echo ::set-output name=prerelease::true
+
+      - name: Create Release
+        uses: ncipollo/release-action@v1
+        with:
+          artifacts: "dist/*"
+          token: ${{ secrets.GITHUB_TOKEN }}
+          draft: false
+          prerelease: steps.check-version.outputs.prerelease == 'true'
+
+      - name: Publish to PyPI
+        env:
+          POETRY_PYPI_TOKEN_PYPI: ${{ secrets.PYPI_TOKEN }}
+        run: poetry publish