Feat: add pages and navigation between them; random mass

lib/pages/home.dart

@@ -0,0 +1,68 @@
+import 'package:flutter/material.dart';
+import 'package:fitneschi/pages/gain_room.dart';
+import 'package:fitneschi/pages/lose_room.dart';
+import 'dart:math';
+
+int randomInRange(int min, int max) {
+  final random = Random();
+  return min + random.nextInt(max - min + 1);
+}
+
+class Home extends StatefulWidget{
+  const Home({super.key});
+
+  @override
+  State<Home> createState() => _HomeState();
+}
+
+class _HomeState extends State<Home>{
+  //vars
+  int _mass = randomInRange(40, 80);
+  //methods
+  void _gainMass(){
+    setState(() {
+    _mass += randomInRange(1, 3);
+    });
+  }
+  //ui
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+        appBar: AppBar(
+          backgroundColor: const Color.fromARGB(255, 38, 34, 46),
+          title: const Text("Tamagochi 2.0"),
+          centerTitle: true,
+        ),
+        body: Column(
+          children: [
+            Row(
+              mainAxisAlignment: MainAxisAlignment.center,
+              children: [
+                Icon(Icons.scale),
+                Text("Body Mass: "),
+                Text(_mass.toString()),
+              ],
+            ),
+            Text("Fat Pct"),
+            Text("Daily Caloric Norm"),
+            ElevatedButton(
+             child: Text("Gain Mass"),
+             onPressed: (){
+               Navigator.push(context,
+               MaterialPageRoute(builder: (context) => GainRoom()),
+               );
+              },
+            ),
+            ElevatedButton(
+             child: Text("Lose Mass"),
+             onPressed: (){
+               Navigator.push(context,
+               MaterialPageRoute(builder: (context) => LoseRoom()),
+               );
+              },
+            ),
+          ],
+        ),
+    );
+  }
+}