fix: add GH workflows because GL integration does not work

.github/workflows/ci-pipeline.yml

@@ -0,0 +1,34 @@
+name: piven CI
+
+on: [push]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: 3.7.9
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v2
+      with:
+        python-version: ${{ matrix.python-version }}
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install black==20.8b1 flake8==3.8.4
+        export PYTHONPATH="$PYTHONPATH:."
+        python -c "import sys;print(sys.path)"
+        pip install pytest>=2.0.0 coverage pytest-cov
+        pip install .
+    - name: Static analysis
+      run: |
+        black src/piven/*.py
+        flake8 --max-line-length=120 src/piven/*.py
+    - name: Test with pytest
+      run: |
+        pytest --cov=piven
+