Add GitHub Actions workflow for publishing to PyPI

This workflow automates the publishing of Python packages to PyPI upon tagging a version. It includes steps for building distribution artifacts and uploading them.

Author: SidRichardsQuantum

.github/workflows/publish.yml

@@ -0,0 +1,58 @@
+name: publish
+
+on:
+  push:
+    tags:
+      - "v*"
+  workflow_dispatch:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    env:
+      PYTHONUTF8: "1"
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.12"
+          cache: "pip"
+          cache-dependency-path: |
+            pyproject.toml
+
+      - name: Build distribution artifacts
+        run: |
+          python -m pip install --upgrade pip
+          python -m pip install build
+          python -m build
+
+      - name: Upload distribution artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: python-package-distributions
+          path: dist/
+
+  publish-pypi:
+    runs-on: ubuntu-latest
+    needs: build
+
+    permissions:
+      id-token: write
+
+    environment:
+      name: pypi
+
+    steps:
+      - name: Download distribution artifacts
+        uses: actions/download-artifact@v4
+        with:
+          name: python-package-distributions
+          path: dist/
+
+      - name: Publish to PyPI
+        uses: pypa/gh-action-pypi-publish@release/v1