Add npm run coverage shortcut (#18)

Author: DoctorLai

.github/workflows/coverage.yaml

@@ -26,7 +26,7 @@ jobs:
         run: npm ci
 
       - name: Run tests with coverage
-        run: npx vitest run --coverage
+        run: npm run coverage
 
       - name: Report coverage on PR
         uses: davelosert/vitest-coverage-report-action@v2

package.json

@@ -6,6 +6,7 @@
     "dev": "vite",
     "build": "vite build",
     "preview": "vite preview",
+    "coverage": "npx vitest run --coverage",
     "test": "vitest --watch=false",
     "deploy": "npm run add-version && npm run build && gh-pages -d dist",
     "add-version": "echo \"VITE_COMMIT_HASH=$(git rev-parse --short HEAD)\" > .env",