Merge branch 'main' into 'alis_dev_branch'

# Conflicts:
#   lib/main.dart

lib/pages/pageAmbiente.dart

@@ -0,0 +1,10 @@
+import 'package:flutter/material.dart';
+
+class PageAmbiente extends StatelessWidget {
+  const PageAmbiente({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return const Placeholder();
+  }
+}

lib/pages/pageEssen.dart

@@ -0,0 +1,10 @@
+import 'package:flutter/material.dart';
+
+class PageEssen extends StatelessWidget {
+  const PageEssen({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return const Placeholder();
+  }
+}

lib/providers/pageProvider.dart

@@ -1,5 +1,17 @@
 import 'package:flutter/material.dart';
+import 'package:mensaapp/pages/pageAmbiente.dart';
+import 'package:mensaapp/pages/pageEssen.dart';
 
 class PageProvider extends ChangeNotifier {
+  int selectedPage = 0;
 
+  List<Widget> pages = [
+    const PageEssen(),
+    const PageAmbiente()
+  ];
+
+  void changePage(int index) {
+    selectedPage = index;
+    notifyListeners();
+  }
 }