Infra: Capitalisation Consistency (#6296)

* Rename Ryujinx.UI.Common

* Rename Ryujinx.UI.LocaleGenerator

* Update in Files

AboutWindow

* Configuration State

* Rename projects

* Ryujinx/UI

* Fix build

* Main remaining inconsistencies

* HLE.UI Namespace

* HLE.UI Files

* Namespace

* Ryujinx.UI.Common.Configuration.UI

* Ryujinx.UI.Common,Configuration.UI Files

* More instances

src/Ryujinx.HLE/UI/IHostUIHandler.cs

@@ -0,0 +1,51 @@
+using Ryujinx.HLE.HOS.Applets;
+using Ryujinx.HLE.HOS.Services.Am.AppletOE.ApplicationProxyService.ApplicationProxy.Types;
+
+namespace Ryujinx.HLE.UI
+{
+    public interface IHostUIHandler
+    {
+        /// <summary>
+        /// Displays an Input Dialog box to the user and blocks until text is entered.
+        /// </summary>
+        /// <param name="userText">Text that the user entered. Set to `null` on internal errors</param>
+        /// <returns>True when OK is pressed, False otherwise. Also returns True on internal errors</returns>
+        bool DisplayInputDialog(SoftwareKeyboardUIArgs args, out string userText);
+
+        /// <summary>
+        /// Displays a Message Dialog box to the user and blocks until it is closed.
+        /// </summary>
+        /// <returns>True when OK is pressed, False otherwise.</returns>
+        bool DisplayMessageDialog(string title, string message);
+
+        /// <summary>
+        /// Displays a Message Dialog box specific to Controller Applet and blocks until it is closed.
+        /// </summary>
+        /// <returns>True when OK is pressed, False otherwise.</returns>
+        bool DisplayMessageDialog(ControllerAppletUIArgs args);
+
+        /// <summary>
+        /// Tell the UI that we need to transisition to another program.
+        /// </summary>
+        /// <param name="device">The device instance.</param>
+        /// <param name="kind">The program kind.</param>
+        /// <param name="value">The value associated to the <paramref name="kind"/>.</param>
+        void ExecuteProgram(Switch device, ProgramSpecifyKind kind, ulong value);
+
+        /// Displays a Message Dialog box specific to Error Applet and blocks until it is closed.
+        /// </summary>
+        /// <returns>False when OK is pressed, True when another button (Details) is pressed.</returns>
+        bool DisplayErrorAppletDialog(string title, string message, string[] buttonsText);
+
+        /// <summary>
+        /// Creates a handler to process keyboard inputs into text strings.
+        /// </summary>
+        /// <returns>An instance of the text handler.</returns>
+        IDynamicTextInputHandler CreateDynamicTextInputHandler();
+
+        /// <summary>
+        /// Gets fonts and colors used by the host.
+        /// </summary>
+        IHostUITheme HostUITheme { get; }
+    }
+}