Add a pre-release workflow (#494)

Signed-off-by: Sambhav Kothari <[email protected]>

.github/workflows/pre-release.yml

@@ -0,0 +1,26 @@
+---
+name: Test PyPI publish
+
+on:
+  release:
+    types: [prereleased]
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: Set up Python 3.8
+        uses: actions/setup-python@v4
+        with:
+          python-version: 3.8
+      - name: Install base dependencies
+        run: |
+          python -m pip install --upgrade pip
+          python -m pip install poetry
+      - name: Bump version number
+        run: poetry version ${{ github.event.release.tag_name }}
+      - name: Build and publish
+        run: |
+          poetry build
+          poetry config repositories.testpypi https://test.pypi.org/legacy/
+          poetry publish -r testpypi -u __token__ -p ${{ secrets.PYPI_TEST_API_TOKEN }}