chore: add keywords for package.json

Author: sorrycc

package.json

@@ -10,6 +10,11 @@
   "engines": {
     "node": ">=8.0.0"
   },
+  "keywords": [
+    "umi",
+    "umi-plugin",
+    "mpa"
+  ],
   "scripts": {
     "changelog": "git changelog CHANGELOG.md && git add ./ && git commit -m 'update CHANGELOG.md'",
     "coveralls": "cat ./coverage/lcov.info | coveralls",