feat: Update UserRepository to use ClientHttpService for authentication

This commit updates the UserRepository class to use the ClientHttpService for authentication. It replaces the previous implementation that used TextEditingController. This change allows for better separation of concerns and improves the overall structure of the code.

lib/src/app/splash_page.dart

@@ -1,7 +1,9 @@
 import 'package:flutter/material.dart';
+import 'package:gohealth/api/services/client_http_service.dart';
 import 'package:gohealth/src/app/home/home_page.dart';
 import 'package:gohealth/src/app/login/login_page.dart';
 import 'package:gohealth/api/repositories/user_repository.dart';
+import 'package:http/http.dart';
 
 class SplashPage extends StatefulWidget {
   const SplashPage({super.key});
@@ -14,7 +16,8 @@ class SplashPageState extends State<SplashPage> {
   @override
   void initState() {
     super.initState();
-    UserRepository.checkToken().then((value) {
+    UserRepository userRepository = UserRepository(ClientHttpService());
+    userRepository.checkToken().then((value) {
       if (value) {
         Navigator.pushReplacement(
             context,