build: change ESM import to plugin to prevent import errors

Import error on ESM would be "Export assignment cannot be used when targeting ECMAScript modules.".

package.json

@@ -21,11 +21,10 @@
   "type": "module",
   "exports": {
     ".": {
-      "import": "./dist/index.js",
+      "import": "./dist/plugin.js",
       "require": "./dist/index.cjs"
     }
   },
-  "types": "./dist/index.d.ts",
   "files": [
     "./dist/**/!(*.test).{js,d.ts,cjs}"
   ],