Add GitHub release action to upload to PyPI & create GitHub release

Author: terencehonles

.github/workflows/release.yml

@@ -0,0 +1,55 @@
+name: Release
+
+on:
+  push:
+    tags:
+    - '*'
+
+jobs:
+  build:
+    if: github.repository == 'typeddjango/django-stubs'
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - uses: actions/setup-python@v3
+        with:
+          python-version: '3.x'
+
+      - name: Install dependencies
+        run: |
+          python -m pip install -U pip
+          python -m pip install -U setuptools twine wheel
+
+      - name: Build package
+        run: |
+          python setup.py --version
+          python setup.py sdist bdist_wheel
+          twine check dist/*
+
+      - name: Publish package to PyPI
+        uses: pypa/gh-action-pypi-publish@release/v1
+        with:
+          user: __token__
+          password: ${{ secrets.PYPI_API_TOKEN }}
+
+          print_hash: true
+          verify_metadata: false  # check done above
+
+      - name: create release
+        uses: actions/github-script@v6
+        with:
+          script: |
+            const tagName = context.ref.replace(/^refs\/tags\//, '');
+            const release = await github.rest.repos.createRelease({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              tag_name: tagName,
+              name: `Release ${tagName.replace(/^v/, '')}`,
+            });
+
+            if (release.status < 200 || release.status >= 300) {
+              core.setFailed(`Could not create release for tag '${tagName}'`);
+              return;
+            }