added publish workflow

.github/workflows/publish.yml

@@ -0,0 +1,38 @@
+name: Publish distributions to PyPI
+
+# if this workflow is modified to be a generic CI workflow then
+# add an if statement to the publish step so it only runs on tags.
+on:
+  push:
+    tags:
+      - "v*"
+  workflow_dispatch:
+
+jobs:
+  build-n-publish:
+    name: Build and publish distributions to PyPI
+    if: github.repository == 'cwru-sdle/pvplr'
+    runs-on: ubuntu-latest
+    steps:
+    # fetch all commits and tags so versioneer works
+    - uses: actions/checkout@v4
+      with:
+        fetch-depth: 0
+
+    - name: Set up Python
+      uses: actions/setup-python@v5
+      with:
+        python-version: "3.12"
+
+    - name: Install build tools
+      run: |
+        python -m pip install --upgrade pip
+        python -m pip install --upgrade setuptools wheel build
+    - name: Build packages
+      run: python -m build --sdist --wheel
+
+    - name: Publish distribution to PyPI
+      uses: pypa/gh-action-pypi-publish@release/v1
+      with:
+        user: __token__
+        password: ${{ secrets.PYPI_PASSWORD }}