Add GitHub Actions workflow for building and publishing to PyPI

Signed-off-by: Tsuyoshi Hombashi <tsuyoshi.hombashi@gmail.com>

.github/workflows/release.yml

@@ -0,0 +1,84 @@
+name: Build and publish the new version to PyPI
+
+on:
+  push:
+    tags:
+      - "v*.*.*"
+
+permissions:
+  contents: read
+
+jobs:
+  build-package:
+    runs-on: ubuntu-latest
+    timeout-minutes: 20
+
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+          fetch-tags: true
+
+      - uses: actions/setup-python@v5
+        with:
+          python-version: "3.12"
+          cache: pip
+          cache-dependency-path: |
+            setup.py
+            **/*requirements.txt
+            tox.ini
+
+      - run: make setup-ci
+
+      - run: make build
+
+      - uses: actions/upload-artifact@v4
+        with:
+          name: dist
+          path: ./dist/*
+
+  publish-package:
+    needs: build-package
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+    environment:
+      name: pypi
+      url: https://pypi.org/p/pathvalidate
+    permissions:
+      id-token: write  # IMPORTANT: this permission is mandatory for trusted publishing
+
+    steps:
+      - uses: actions/download-artifact@v4
+        with:
+          name: dist
+          path: ./dist
+
+      - name: Publish to PyPI
+        uses: pypa/gh-action-pypi-publish@release/v1
+
+  generate-relese:
+    needs: publish-package
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+    permissions:
+      id-token: write
+      contents: write
+
+    steps:
+      - uses: actions/download-artifact@v4
+        with:
+          name: dist
+          path: ./dist
+
+      - name: Sign the dists with Sigstore
+        uses: sigstore/gh-action-sigstore-python@v2.1.1
+        with:
+          inputs: >-
+            ./dist/*.tar.gz
+            ./dist/*.whl
+
+      - name: Generate a GitHub release
+        uses: softprops/action-gh-release@v2
+        with:
+          generate_release_notes: true
+          files: dist/*