chore: include lint script as a part of test

Author: rkpattnaik780

package.json

@@ -9,7 +9,7 @@
     "start": "npm run dev",
     "unit": "cross-env BABEL_ENV=test karma start test/unit/karma.conf.js --single-run",
     "e2e": "node test/e2e/runner.js",
-    "test": "npm run unit && npm run e2e",
+    "test": "npm run lint && npm run unit && npm run e2e",
     "lint": "eslint --ext .js,.vue src test/unit test/e2e/specs",
     "build": "node build/build.js"
   },