Initial upload with CI/CD workflow

.gitea/workflows/ci.yml

@@ -0,0 +1,69 @@
+name: CI
+
+on:
+  push:
+    branches: [main, master]
+  pull_request:
+    branches: [main, master]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.11'
+          cache: 'pip'
+
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install -e ".[dev]"
+
+      - name: Run pytest
+        run: pytest tests/ -v --tb=short
+
+      - name: Run type checking
+        run: |
+          pip install mypy
+          mypy src/codexchange/ --ignore-missing-imports
+
+      - name: Run linting
+        run: |
+          pip install ruff
+          ruff check src/codexchange/ tests/
+
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.11'
+
+      - name: Install ruff
+        run: pip install ruff
+
+      - name: Run linter
+        run: ruff check src/codexchange/ tests/
+
+  typecheck:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.11'
+
+      - name: Install mypy
+        run: pip install mypy
+
+      - name: Run type checker
+        run: mypy src/codexchange/ --ignore-missing-imports