add coverage summary

Author: testetson22

.github/workflows/unittest.yml

@@ -19,4 +19,14 @@ jobs:
           - name: Install dependencies
             run: npm install --force
           - name: Run unit tests
-            run: npm run unittest
+            run: npm run unittest
+          - name: Generate coverage report
+            run: npm run coverage
+          - name: Coverage report
+            uses: saschanowak/CloverCodeCoverageSummary@1.1.0
+            with:
+                filename: ./coverage/clover.xml
+          - name: 'Add Code Coverage to Job Summary'
+            run: |
+                cat code-coverage-summary.md >> $GITHUB_STEP_SUMMARY
+                cat code-coverage-details.md >> $GITHUB_STEP_SUMMARY