implemented workflow

.github/workflows/main.yml

@@ -0,0 +1,21 @@
+name: CI
+
+on:
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  codeQuality:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v2
+
+    - name: Install dependencies
+      run: pip install -r requirements.txt
+
+    - name: Run unit test
+      run: pytest