scope npm package name

apiclient/templates/typescript/package.mustache

@@ -1,5 +1,5 @@
 {
-  "name": "jellyfin-apiclient-{{npmName}}",
+  "name": "@jellyfin/client-{{npmName}}",
   "version": "10.7.0{{snapshotVersion}}",
   "description": "Jellyfin api client using {{npmName}}",
   "author": "Jellyfin Contributors",