added codecov workflow

.codecov.yml

@@ -11,3 +11,6 @@ comment: off
 codecov:
   branch: Develop
   require_ci_to_pass: false
+
+ignore:
+  - "*/tests/*"

.github/workflows/codecov.yml

@@ -0,0 +1,31 @@
+name: CodeCov
+
+on:
+  push:
+    branches: 
+      - Develop
+
+jobs:
+  run:
+    runs-on: ubuntu-latest
+    env:
+      OS: ubuntu-latest
+      PYTHON: '3.8'
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Setup Python 3.8
+      uses: actions/setup-python@master
+      with:
+        python-version: 3.8
+
+    - name: 'generate report'
+      run: |
+        pip install coverage
+        coverage run -m unittest
+
+    - name: Upload coverage to Codecov
+      uses: codecov/codecov-action@v1
+      with:
+        flags: unittests
+        fail_ci_if_error: true