Add unit test coverage reporting

Author: socsieng

.github/actions/test/action.yml

@@ -7,3 +7,7 @@ runs:
         - name: Run tests
           run: pnpm test
           shell: bash
+
+        - name: Report test coverage
+          if: always() 
+          uses:  davelosert/vitest-coverage-report-action@v2

packages/tests-unit/vitest.config.ts

@@ -17,6 +17,8 @@ export default defineConfig({
         "**/dist/**",
         "**/coverage/**",
       ],
+      reporter: ["text", "html", "json", "json-summary"],
+      reportOnFailure: true,
     },
     root: "../../",
     include: ["packages/tests-unit/**/*.{test,spec}.?(c|m)ts"],