ldn: Implement calls of UserLocalCommunicationService (#829)

* ldn: Implement calls of UserLocalCommunicationService

- Implement `IUserServiceCreator: CreateUserLocalCommunicationService` according to RE.
- Implement `IUserLocalCommunicationService` calls:
  - Every calls in this interface are layered to `NetworkInterface`.
  - `GetState` according to RE.
  - `InitializeOld`, `Initialize` and `Finalize` stubbed with the appropriate result code and some TODO according to RE.
  - `AttachStateChangeEvent` according to RE.

* Fix var name and TODO comments

* Fix review

1 files changed, 12 insertions, 1 deletions

diff --git a/Ryujinx.HLE/HOS/Services/Ldn/IUserServiceCreator.cs b/Ryujinx.HLE/HOS/Services/Ldn/IUserServiceCreator.cs
index 052727dd..3fc9ce1c 100644
--- a/Ryujinx.HLE/HOS/Services/Ldn/IUserServiceCreator.cs
+++ b/Ryujinx.HLE/HOS/Services/Ldn/IUserServiceCreator.cs
@@ -1,8 +1,19 @@
-namespace Ryujinx.HLE.HOS.Services.Ldn
+using Ryujinx.HLE.HOS.Services.Ldn.UserServiceCreator;
+
+namespace Ryujinx.HLE.HOS.Services.Ldn
 {
     [Service("ldn:u")]
     class IUserServiceCreator : IpcService
     {
         public IUserServiceCreator(ServiceCtx context) { }
+
+        [Command(0)]
+        // CreateUserLocalCommunicationService() -> object<nn::ldn::detail::IUserLocalCommunicationService>
+        public ResultCode CreateUserLocalCommunicationService(ServiceCtx context)
+        {
+            MakeObject(context, new IUserLocalCommunicationService(context));
+
+            return ResultCode.Success;
+        }
     }
 }
\ No newline at end of file