Turn off vscode cmake prompt - we don't use cmake on meshtastic (#4122)

.vscode/settings.json

@@ -3,5 +3,6 @@
   "editor.defaultFormatter": "trunk.io",
   "trunk.enableWindows": true,
   "files.insertFinalNewline": false,
-  "files.trimFinalNewlines": false
+  "files.trimFinalNewlines": false,
+  "cmake.configureOnOpen": false
 }