Add: CartProvider

lib/states/mobile.dart

@@ -1,6 +1,7 @@
 import 'package:flutter/material.dart';
 import 'package:gymlink_module_web/main_mobile.dart';
 import 'package:gymlink_module_web/pages/main.dart';
+import 'package:gymlink_module_web/providers/cart.dart';
 import 'package:gymlink_module_web/providers/main.dart';
 import 'package:provider/provider.dart';
 
@@ -8,12 +9,19 @@ class MyAppStateMobile extends State<MyApp> {
   @override
   Widget build(BuildContext context) {
     return Consumer<GymLinkProvider>(
-      builder: (context, provider, __) => MaterialApp(
-        title: 'GymLink Module',
-        theme: provider.theme,
-        debugShowCheckedModeBanner: false,
-        home: MainPage(isLoading: provider.isLoading),
-      ),
+      builder: (context, provider, __) {
+        final theme = provider.theme;
+        final isLoading = provider.isLoading;
+        return ChangeNotifierProvider(
+          create: (_) => CartProvider(),
+          builder: (context, __) => MaterialApp(
+            title: 'GymLink Module',
+            theme: theme,
+            debugShowCheckedModeBanner: false,
+            home: MainPage(isLoading: isLoading),
+          ),
+        );
+      },
     );
   }
 }

lib/states/web.dart

@@ -5,7 +5,9 @@ import 'dart:js_interop_unsafe' as js_util;
 import 'package:flutter/material.dart';
 import 'package:gymlink_module_web/main.dart';
 import 'package:gymlink_module_web/pages/main.dart';
+import 'package:gymlink_module_web/providers/cart.dart';
 import 'package:gymlink_module_web/theme.dart';
+import 'package:provider/provider.dart';
 
 @js.JSExport()
 class MyAppStateWeb extends State<MyApp> {
@@ -30,11 +32,14 @@ class MyAppStateWeb extends State<MyApp> {
 
   @override
   Widget build(BuildContext context) {
-    return MaterialApp(
-      title: 'GymLink Module',
-      theme: theme,
-      debugShowCheckedModeBanner: false,
-      home: MainPage(isLoading: _isLoading),
+    return ChangeNotifierProvider(
+      create: (_) => CartProvider(),
+      child: MaterialApp(
+        title: 'GymLink Module',
+        theme: theme,
+        debugShowCheckedModeBanner: false,
+        home: MainPage(isLoading: _isLoading),
+      ),
     );
   }