chore: applets: Cleanup redundant ReadStruct implementations & provide a default implementation for IApplet#GetResult.

src/Ryujinx.HLE/HOS/Applets/SoftwareKeyboard/TRef.cs

@@ -2,7 +2,7 @@ namespace Ryujinx.HLE.HOS.Applets.SoftwareKeyboard
 {
     /// <summary>
     /// Wraps a type in a class so it gets stored in the GC managed heap. This is used as communication mechanism
-    /// between classed that need to be disposed and, thus, can't share their references.
+    /// between classes that need to be disposed and, thus, can't share their references.
     /// </summary>
     /// <typeparam name="T">The internal type.</typeparam>
     class TRef<T>