Update extensions.json (#776)

Author: arcbtc

extensions.json

@@ -1,11 +1,14 @@
 {
     "featured": [
         "tpos",
-        "jukebox",
-        "gerty",
-        "lncalendar",
-        "lnurlp",
-        "withdraw"
+        "chat",
+        "orders",
+        "shipping",
+        "xerosync",
+        "inventory",
+        "withdraw",
+        "scrum",
+        "coinflip"
     ],
     "extensions": [
         {
@@ -2217,4 +2220,4 @@
             "details_link": "https://raw.githubusercontent.com/lnbits/custom_public_page/main/config.json"
         }
     ]
-}
+}