[ISSUE-10]: coverage github workflow

Author: SzigetiJ

.github/workflows/coverage.yml

@@ -0,0 +1,22 @@
+name: Coverage CI
+
+on:
+  push:
+    branches: [ develop ]
+  pull_request:
+    branches: [ develop ]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: generate
+      run: make -f coverage.mk
+      working-directory: cov
+    - name: Upload coverage to Codecov
+      uses: codecov/codecov-action@v2
+      with:
+        directory: cov