ci: Add testpypi workflow (#119)

.github/workflows/pre-release.yml

@@ -0,0 +1,52 @@
+---
+name: Publish Python 🐍 distribution 📦 to PyPI and TestPyPI
+
+on:
+  workflow_dispatch
+
+jobs:
+  build:
+    name: Build distribution 📦
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v4
+    - name: Set up Python
+      uses: actions/setup-python@v5
+      with:
+        python-version: "3.x"
+    - name: Install pypa/build
+      run: python -m pip install build --user
+    - name: Build a binary wheel and a source tarball
+      # Ninja testinfg
+      # run_id does not change if the workflow is re-run
+      run: python -m build -C--global-option=bdist_wheel -C--global-option=--build-number="${{ github.run_id }}-${{github.run_attempt}}"
+    - name: Store the distribution packages
+      uses: actions/upload-artifact@v4
+      with:
+        name: python-package-distributions
+        path: dist/
+
+  publish-to-testpypi:
+    name: Publish Python 🐍 distribution 📦 to TestPyPI
+    needs: [build]
+    runs-on: ubuntu-latest
+
+    environment:
+      name: testpypi
+      url: https://test.pypi.org/p/j2lint
+
+    permissions:
+      id-token: write
+
+    steps:
+    - name: Download all the dists
+      uses: actions/download-artifact@v4
+      with:
+        name: python-package-distributions
+        path: dist/
+
+    - name: Publish distribution 📦 to TestPyPI
+      uses: pypa/gh-action-pypi-publish@release/v1
+      with:
+        repository-url: https://test.pypi.org/legacy/