Add flutter 3+ support. Update dependencies. Fix code style and format issues.

lib/config/routes/router.dart

@@ -1,6 +1,5 @@
 import 'package:fluro/fluro.dart';
 import 'package:flutter/material.dart';
-import 'package:flutter/widgets.dart';
 import 'package:thingsboard_app/core/auth/auth_routes.dart';
 import 'package:thingsboard_app/core/context/tb_context.dart';
 import 'package:thingsboard_app/core/init/init_routes.dart';
@@ -20,15 +19,12 @@ class ThingsboardAppRouter {
   late final _tbContext = TbContext(router);
 
   ThingsboardAppRouter() {
-    router.notFoundHandler = Handler(handlerFunc: (BuildContext? context, Map<String, List<String>> params) {
+    router.notFoundHandler = Handler(
+        handlerFunc: (BuildContext? context, Map<String, List<String>> params) {
       var settings = context!.settings;
       return Scaffold(
-        appBar: AppBar(
-          title: Text('Not Found')
-        ),
-        body: Center(
-          child: Text('Route not defined: ${settings!.name}')
-        ),
+        appBar: AppBar(title: Text('Not Found')),
+        body: Center(child: Text('Route not defined: ${settings!.name}')),
       );
     });
     InitRoutes(_tbContext).registerRoutes();
@@ -49,7 +45,6 @@ class ThingsboardAppRouter {
 }
 
 abstract class TbRoutes {
-
   final TbContext _tbContext;
 
   TbRoutes(this._tbContext);
@@ -61,5 +56,4 @@ abstract class TbRoutes {
   void doRegisterRoutes(FluroRouter router);
 
   TbContext get tbContext => _tbContext;
-
 }

lib/config/themes/tb_theme.dart

@@ -24,7 +24,8 @@ const tbMatIndigo = MaterialColor(
     700: Color(0xFF303F9F),
     800: Color(0xFF283593),
     900: Color(0xFF1A237E),
-  },);
+  },
+);
 
 const tbDarkMatIndigo = MaterialColor(
   _tbPrimaryColorValue,
@@ -39,44 +40,40 @@ const tbDarkMatIndigo = MaterialColor(
     700: Color(0xFF303F9F),
     800: _tbPrimaryColor,
     900: Color(0xFF1A237E),
-  },);
+  },
+);
+
+final ThemeData theme = ThemeData();
 
 ThemeData tbTheme = ThemeData(
     primarySwatch: tbMatIndigo,
-    accentColor: Colors.deepOrange,
+    colorScheme: theme.colorScheme.copyWith(secondary: Colors.deepOrange),
     scaffoldBackgroundColor: Color(0xFFFAFAFA),
     textTheme: tbTypography.black,
     primaryTextTheme: tbTypography.black,
     typography: tbTypography,
     appBarTheme: AppBarTheme(
-      backgroundColor: Colors.white,
-      foregroundColor: _tbTextColor,
-      /* titleTextStyle: TextStyle(
+        backgroundColor: Colors.white,
+        foregroundColor: _tbTextColor,
+        /* titleTextStyle: TextStyle(
           color: _tbTextColor
       ),
       toolbarTextStyle: TextStyle(
             color: _tbTextColor
       ), */
-      iconTheme: IconThemeData(
-        color: _tbTextColor
-      )
-
-    ),
+        iconTheme: IconThemeData(color: _tbTextColor)),
     bottomNavigationBarTheme: BottomNavigationBarThemeData(
-      backgroundColor: Colors.white,
-      selectedItemColor: _tbPrimaryColor,
-      unselectedItemColor: _tbPrimaryColor.withAlpha((255 * 0.38).ceil()),
-      showSelectedLabels: true,
-      showUnselectedLabels: true
-    ),
+        backgroundColor: Colors.white,
+        selectedItemColor: _tbPrimaryColor,
+        unselectedItemColor: _tbPrimaryColor.withAlpha((255 * 0.38).ceil()),
+        showSelectedLabels: true,
+        showUnselectedLabels: true),
     pageTransitionsTheme: PageTransitionsTheme(builders: {
       TargetPlatform.iOS: FadeOpenPageTransitionsBuilder(),
       TargetPlatform.android: FadeOpenPageTransitionsBuilder(),
-    })
-);
+    }));
 
 ThemeData tbDarkTheme = ThemeData(
     primarySwatch: tbDarkMatIndigo,
-    accentColor: Colors.deepOrange,
-    brightness: Brightness.dark
-);
+    colorScheme: theme.colorScheme.copyWith(secondary: Colors.deepOrange),
+    brightness: Brightness.dark);