Fix some errors/warnings from package.json (#1057)

* Fix some errors/warnings from package.json

* Fix package.json export, keep empty index.js chunk

Author: mkszepp

package.json

@@ -5,7 +5,10 @@
   "keywords": [
     "ember-addon"
   ],
-  "repository": "https://github.com/cibernox/ember-basic-dropdown",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/cibernox/ember-basic-dropdown.git"
+  },
   "license": "MIT",
   "author": "Miguel Camba",
   "imports": {

rollup.config.mjs

@@ -60,6 +60,7 @@ export default [
       // is aligned to the config here.
       // See https://github.com/embroider-build/embroider/blob/main/docs/v2-faq.md#how-can-i-define-the-public-exports-of-my-addon
       addon.publicEntrypoints([
+        'index.js',
         'config.js',
         'styles.js',
         'components/**/*.js',