CI: added ci workflows and relevant files

Added workflows to run tests, upload coverage reports, and create tags.
Also added workflows to upload package to PyPI after successful tests.

Author: raycadle

.github/workflows/build-publish-release.yml

@@ -0,0 +1,63 @@
+name: Build and Publish to PyPI, and Create Github Release
+
+on:
+  push:
+    tags:
+      - 'v[0-9]+.[0-9]+.[0-9]+'  # Trigger only on semantic version tags like v0.1.0
+
+jobs:
+  build:
+    name: Build Python Package
+    runs-on: ubuntu-latest
+    
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.10'
+      
+      - name: Install build tools
+        run: python -m pip install --upgrade pip build
+
+      - name: Build package
+        run: python -m build
+        
+      - name: Upload build artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: python-dist
+          path: dist/
+
+  publish:
+    name: Publish to PyPI
+    needs: build
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Download build artifacts
+        uses: actions/download-artifact@v4
+        with:
+          name: python-dist
+          path: dist/
+
+      - name: Publish to PyPI
+        uses: pypa/[email protected]
+        with:
+          password: ${{ secrets.PYPI_API_TOKEN }}
+
+  release:
+    name: Create GitHub Release
+    needs: publish
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Create GitHub Release
+        uses: softprops/action-gh-release@v1
+        with:
+          tag_name: ${{ github.ref_name }}
+          generate_release_notes: true
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}