Create ci.yml

Added continuous integration

.github/workflows/ci.yml

@@ -0,0 +1,39 @@
+name: CI/CD Pipeline
+
+on: 
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        python-version: [3.7, 3.8, 3.9]
+
+    steps:
+    - name: Checkout code
+      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 -r requirements.txt
+
+    - name: Lint with flake8
+      run: |
+        pip install flake8
+        flake8 .
+
+    - name: Run tests
+      run: |
+        pip install pytest
+        pytest