Split workflows into test and deploy

.github/workflows/deploy.yml

@@ -0,0 +1,33 @@
+name: deploy
+
+on:
+  push:
+    tags:
+      - "v*"
+
+jobs:
+  deploy:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v3
+      with:
+        # Needed to fetch tags, which are required by setuptools-scm.
+        fetch-depth: 0
+    - name: Set up Python
+      uses: actions/setup-python@v2
+      with:
+        python-version: "3.10"
+    - name: Install build
+      run: |
+        python -m pip install --upgrade pip
+        pip install build
+    - name: Build package
+      run: |
+        python -m build
+    - name: Publish package to PyPI
+      uses: pypa/gh-action-pypi-publish@release/v1
+      with:
+        user: __token__
+        password: ${{ secrets.pypi_token }}