refactor(SNM config): Move rest config top level

src/status_node_manager/config.nim

@@ -17,11 +17,6 @@ type
 
 type
   StatusNodeManagerConfig* = object
-    case cmd* {.
-      command
-      defaultValue: SNMStartUpCmd.noCommand .}: SNMStartUpCmd
-
-    of SNMStartUpCmd.noCommand:
     restEnabled* {.
       desc: "Enable the REST server"
       defaultValue: true
@@ -56,6 +51,13 @@ type
       desc: "Maximum size of REST request headers (kilobytes)"
       name: "rest-max-headers-size" .}: Natural
 
+    case cmd* {.
+      command
+      defaultValue: SNMStartUpCmd.noCommand .}: SNMStartUpCmd
+
+    of SNMStartUpCmd.noCommand:
+     discard
+
     of SNMStartUpCmd.pair:
       qr* {.
         desc: "A string representation of the QR code produced by the GUI"