On boot, check system theme and set MIH Theme

Frontend/lib/main.dart

@@ -1,4 +1,5 @@
 import 'package:flutter/material.dart';
+import 'package:flutter/scheduler.dart';
 //import 'package:fpjs_pro_plugin/error.dart';
 import '../mih_env/env.dart';
 import '../mih_router/routeGenerator.dart';
@@ -79,7 +80,15 @@ class _MzanziInnovationHubState extends State<MzanziInnovationHub> {
     _themeMode = ThemeMode.dark;
     theme = MyTheme();
     theme.platform = Theme.of(context).platform;
-    theme.mode = "Dark";
+    var brightness =
+        SchedulerBinding.instance.platformDispatcher.platformBrightness;
+    bool isDarkMode = brightness == Brightness.dark;
+    if (isDarkMode) {
+      theme.mode = "Dark";
+    } else {
+      theme.mode = "Light";
+    }
+
     super.initState();
     //doInit();
   }