new startup process UI for Windows

windows/WinUI/OnboardProcess/CreateAccount.xaml.cs

@@ -0,0 +1,66 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Data;
+using System.Windows.Documents;
+using System.Windows.Input;
+using System.Windows.Media;
+using System.Windows.Media.Imaging;
+using System.Windows.Navigation;
+using System.Windows.Shapes;
+
+namespace WinUI.OnboardProcess
+{
+    /// <summary>
+    /// Interaction logic for CreateAccount.xaml
+    /// </summary>
+    public partial class CreateAccount : UserControl, ISwitchable
+    {
+        public CreateAccount()
+        {
+            InitializeComponent();
+        }
+
+        public void UtilizeState(object state)
+        {
+            throw new NotImplementedException();
+        }
+
+        public void CreateAccount_Click(object sender, RoutedEventArgs e)
+        {
+            DoCreateAccount();
+        }
+
+        public void BackButton_Click(object sender, RoutedEventArgs e)
+        {
+            Switcher.Switch(new RegisterOrLogIn());
+        }
+
+        public async void DoCreateAccount()
+        {
+            if (PasswordTextBox1.Password.ToString() != PasswordTextBox2.Password.ToString())
+            {
+                ErrorText.Content = "Passwords do not match!";
+            }
+            else
+            {
+                CentralAPI api = CentralAPI.Instance;
+                bool accountCreated = await api.Login(EmailAddressTextBox.Text, 
+                    PasswordTextBox1.Password.ToString(), true);
+
+                if (accountCreated)
+                {
+                    Switcher.Switch(new CreateOrJoin());
+                }
+                else
+                {
+                    ErrorText.Content = "An error ocurred while creating your account.";
+                }
+            }
+        }
+    }
+}