Add test publish GitHub workflow

.github/workflows/test-publish-pypi.yaml

@@ -0,0 +1,36 @@
+name: Test publish
+
+on: push
+
+permissions:
+  contents: read
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+
+    environment:
+      name: test-pypi
+      url: https://test.pypi.org/project/copyright2
+
+    permissions:
+      id-token: write
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install build
+
+      - name: Build package
+        run: python -m build
+
+      - name: Publish package
+        uses: pypa/gh-action-pypi-publish@v1.9.0
+        with:
+          user: __token__
+          password: ${{ secrets.PYPI_TOKEN }}
+          repository-url: https://test.pypi.org/legacy/