add codeCov GitHub Action job

.github/workflows/codeCoverage.yml

@@ -0,0 +1,27 @@
+name: CodeCov
+on: [push, pull_request]
+jobs:
+    code-coverage:
+        runs-on: ubuntu-latest
+        env:
+            OS: ubuntu-latest
+            PYTHON: '3.12'
+        steps:
+            - uses: actions/checkout@v4
+              with:
+                fetch-depth: 2
+            - name: Setup Python
+              uses: actions/setup-python@v2
+              with:
+                python-version: 3.12
+            - name: Install bashi
+              run: |
+                pip install .
+            - name: Generate Report
+              run: |
+                pip install coverage
+                coverage run
+            - name: Upload coverage reports to Codecov
+              uses: codecov/codecov-action@v3
+              env:
+                CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}

README.md

@@ -4,6 +4,8 @@ This project will be the successor to the [alpaka-job-matrix-library](https://gi
 
 # bashi
 
+[![codecov](https://codecov.io/github/alpaka-group/bashi/graph/badge.svg?token=QEF8G02ZST)](https://codecov.io/github/alpaka-group/bashi)
+
 A library to provide a job generator for CI's for alpaka based projects.
 
 # Developing