Add release workflow

.github/workflows/release.yml

@@ -0,0 +1,30 @@
+name: Release
+
+on:
+  push:
+    branches: [ tt/92/deploy-via-github-actions ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v4
+    - name: Set up Python 3.10
+      uses: actions/setup-python@v5
+      with:
+        python-version: 3.10
+    - name: Install pipenv, build dependencies
+      run: |
+        python -m pip install pipenv
+        pipenv install --dev
+    - name: Build source package
+      run: |
+        pipenv run python -m build --sdist
+    - name: Build wheels
+      run: |
+        pipenv run python -m cibuildwheel --output-dir dist
+        pipenv run python -m twine check dist/*
+    - name: Upload to PyPI
+      run: |
+        pipenv run python -m twine upload --repository testpypi dist/*