Add more dex entries

lib/MainApp.dart

@@ -21,6 +21,8 @@ class _MainAppState extends State<MainApp> {
     setState(() {
       SessionData.darkMode = !SessionData.darkMode;
     });
+
+    SessionData.finalize();
   }
 
   @override
@@ -48,6 +50,21 @@ class Home extends StatefulWidget {
 }
 
 class _HomeState extends State<Home> {
+  @override
+  void didChangeDependencies() {
+    SessionData.callbacks.mainPage = widget.toggleTheme;
+    SessionData.initialize();
+
+    super.didChangeDependencies();
+  }
+
+  @override
+  void dispose() {
+    SessionData.callbacks.mainPage = null;
+
+    super.dispose();
+  }
+
   @override
   Widget build(BuildContext context) {
     return Scaffold(
@@ -167,9 +184,21 @@ class _DexEntryState extends State<DexEntry> {
   void didChangeDependencies() {
     int index = ModalRoute.of(context)!.settings.arguments as int;
     _pkmn = Pokemon.values[index];
+
+    SessionData.callbacks.dexDisplay = () async {
+      setState(() {});
+    };
+
     super.didChangeDependencies();
   }
 
+  @override
+  void dispose() {
+    SessionData.callbacks.dexDisplay = null;
+
+    super.dispose();
+  }
+
   @override
   Widget build(BuildContext context) {
     return Scaffold(