Installing the Acr.UserDialogs plugin

Acr.UserDialogs is a plugin that makes it possible to use several standard user dialogs from code that are shared between platforms. To install and configure it, there are a few steps we need to follow:

1. Install the Acr.UserDialogs NuGet package for the Chat-, Chat.iOS, and Chat.Android projects.
2. In the MainActivity.cs file, add UserDialogs.Init(this) to the OnCreate method:

protected override void OnCreate(Bundle savedInstanceState)
{
    TabLayoutResource = Resource.Layout.Tabbar;
    ToolbarResource = Resource.Layout.Toolbar;
    
    base.OnCreate(savedInstanceState);
    
    UserDialogs.Init(this);
            
    global::Xamarin.Forms.Forms.Init(this, savedInstanceState);
    LoadApplication(new App());
}