Add github workflows

Signed-off-by: Pavel Kulyov <[email protected]>

.github/workflows/main.yml

@@ -0,0 +1,43 @@
+name: CI
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: [3.6, 3.7, 3.8]
+
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v1
+      with:
+        python-version: ${{ matrix.python-version }}
+
+    - name: Install Poetry
+      uses: dschep/[email protected]
+
+    - name: Install dependencies
+      run: poetry install
+
+    - name: Code quality
+      run: poetry run pylint pytopsort
+
+    - name: Check formatting
+      run: poetry run black . --check
+
+    - name: Check types
+      run: poetry run pytest --mypy --mypy-ignore-missing-imports -s -v pytopsort/ tests/
+
+    - name: Run tests
+      run: poetry run pytest --cov=./pytopsort --cov-report=xml -s -v tests
+
+    - name: Upload coverage
+      uses: codecov/codecov-action@v1