Debug and Trace modes can now be (de)activated via API commands and are persisted across reboots.

include/main.h

@@ -1,5 +1,9 @@
 #pragma once
+#include <Preferences.h>
 
 void wifi_connect();
 
 extern const uint8_t file_index_html_start[] asm("_binary_src_index_html_start");
+extern bool debug_enabled;
+extern bool trace_enabled;
+extern Preferences prefs;