feat(informer): ✨ add case for when sub command is passed a single param

Currently returns:
- Item at given slot number
- Entity that matches given name

lib/plugins/informer.js

@@ -66,6 +66,18 @@ function command(message_parts) {
 
             break;
 
+        case 2:
+            switch (message_parts[0]) {
+                case "item":
+                    item(message_parts[1])
+                    break
+                case "entity":
+                default:
+                    entity(message_parts[1])
+                    break;
+            }
+            break
+
         case 4:
             switch (message_parts[0]) {
                 case "block":