Adding GitHub actions for package and publish

Author: btfranklin

.github/workflows/python-package.yml

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+# This workflow will install Python dependencies, run tests and lint with a variety of Python versions
+# For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-python
+
+name: Python package
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version: ["3.10", "3.11", "3.12"]
+
+    steps:
+      - uses: actions/checkout@v4
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v5
+        with:
+          python-version: ${{ matrix.python-version }}
+      - name: Install PDM
+        run: |
+          python -m pip install --upgrade pip
+          python -m pip install pdm
+      - name: Install dependencies
+        run: |
+          pdm install
+      - name: Lint with flake8
+        run: |
+          pdm run flake8 src tests --count --select=E9,F63,F7,F82 --show-source --statistics
+          pdm run flake8 src tests --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
+      - name: Test with pytest
+        run: |
+          pdm run pytest

.github/workflows/python-publish.yml

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+# This workflow will upload a Python Package using Twine when a release is created
+# For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-python#publishing-to-package-registries
+
+name: Upload Python Package
+
+on:
+  release:
+    types: [published]
+
+permissions:
+  contents: read
+
+jobs:
+  deploy:
+
+    runs-on: ubuntu-latest
+    environment: release
+    permissions:
+      # IMPORTANT: this permission is mandatory for trusted publishing
+      id-token: write
+
+    steps:
+    - uses: actions/checkout@v4
+    - name: Set up Python
+      uses: actions/setup-python@v5
+      with:
+        python-version: '3.x'
+    - name: Install PDM and mypy
+      run: |
+        python -m pip install --upgrade pip
+        python -m pip install pdm
+        python -m pip install mypy  # Install mypy for stubgen
+    - name: Generate type stubs
+      run: stubgen src -o src  # Generate stubs directly into the src directory
+    - name: Build package
+      run: pdm build
+    - name: Publish package
+      uses: pypa/gh-action-pypi-publish@v1.8.14