add manifest info and icon

CloudronManifest.json

@@ -1,6 +1,8 @@
 {
   "title": "Romm",
   "version": "0.1.0",
+  "author":"Kevin Whitaker <kevin@eyecreate.org>",
+  "description":"A beautiful, powerful, self-hosted rom manager and player.",
   "healthCheckPath": "/",
   "httpPort": 3000,
   "memoryLimit": 1048576000,
@@ -14,5 +16,7 @@
     },
     "redis": { "noPassword": true }
   },
+  "website":"https://romm.app/",
+  "icon":"file://icon.png",
   "manifestVersion": 2
 }