fix: fix main entrypoint in package.json

Point it correctly to index.js instead of properties.js

Author: mdvorak

package.json

@@ -31,7 +31,8 @@
   "engines": {
     "node": ">= 14"
   },
-  "main": "lib/properties.js",
+  "main": "lib/index.js",
+  "types": "lib/index.d.ts",
   "files": [
     "lib",
     "src"