Add launch configuration for VSCode and update main function to load environment variables

Signed-off-by: Hans Kokx <hans.d.kokx@gmail.com>

.vscode/launch.json

@@ -0,0 +1,25 @@
+{
+  // Use IntelliSense to learn about possible attributes.
+  // Hover to view descriptions of existing attributes.
+  // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+  "version": "0.2.0",
+  "configurations": [
+    {
+      "name": "rental_income_tracker",
+      "request": "launch",
+      "type": "dart"
+    },
+    {
+      "name": "rental_income_tracker (profile mode)",
+      "request": "launch",
+      "type": "dart",
+      "flutterMode": "profile"
+    },
+    {
+      "name": "rental_income_tracker (release mode)",
+      "request": "launch",
+      "type": "dart",
+      "flutterMode": "release"
+    }
+  ]
+}

lib/main.dart

@@ -1,9 +1,12 @@
 import 'package:flutter/material.dart';
+import 'package:flutter_dotenv/flutter_dotenv.dart';
 import 'package:provider/provider.dart';
 import 'package:rental_income_tracker/screens/home_screen.dart';
 import 'package:rental_income_tracker/state/rent_controller.dart';
 
-void main() {
+Future<void> main() async {
+  WidgetsFlutterBinding.ensureInitialized();
+  await dotenv.load(fileName: '.env');
   runApp(const RentalIncomeTrackerApp());
 }