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.UI.Common/App/ApplicationJsonSerializerContext.cs

@@ -0,0 +1,10 @@
+using System.Text.Json.Serialization;
+
+namespace Ryujinx.UI.App.Common
+{
+    [JsonSourceGenerationOptions(WriteIndented = true)]
+    [JsonSerializable(typeof(ApplicationMetadata))]
+    internal partial class ApplicationJsonSerializerContext : JsonSerializerContext
+    {
+    }
+}