add npm pre/post version scripts

Author: patinthehat

package.json

@@ -56,6 +56,8 @@
         "build:dts": "dts-bundle-generator -o dist/codeboost.d.ts src/lib/CodeBoost.ts",
         "build": "npm run build:cli && npm run build:lib && npm run build:dts",
         "dev": "npm run build:cli && node dist/cli.js",
+        "preversion": "npm run test",
+        "postversion": "npm run build",
         "prepare": "husky install"
     },
     "dependencies": {