ci: add gitea build and publish actions

.gitea/workflows/build.yml

@@ -0,0 +1,37 @@
+name: Build Python Package
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v4
+        with:
+          python-version: "3.13"
+
+      - name: Run setup script
+        run: .gitea/scripts/setup-poetry.sh
+
+      - name: Check code formatting by black
+        run: |
+          poetry run black . --check
+
+      - name: Lint code by ruff
+        run: |
+          poetry run ruff .
+
+      - name: Check types by pyright
+        run: |
+          poetry run pyright
+
+      - name: Build package
+        run: poetry build

.gitea/workflows/publish.yml

@@ -0,0 +1,29 @@
+name: Publish Python Package
+
+on:
+  push:
+    tags:
+      - "v*"
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v4
+        with:
+          python-version: "3.13"
+
+      - name: Run setup script
+        run: .gitea/scripts/setup-poetry.sh
+
+      - name: Build package
+        run: poetry build
+
+      - name: Publish to PyPI
+        env:
+          POETRY_PYPI_TOKEN_PYPI: ${{ secrets.PYPI_TOKEN }}
+        run: poetry publish --username __token__ --password $POETRY_PYPI_TOKEN_PYPI