Add BCAT delivery cache support (#1154)

* Initial bcat delivery cache support

* Use LibHac 0.11.0

* Add option to open the BCAT savedata directory

Ryujinx.HLE/HOS/Services/Bcat/ServiceCreator/IDeliveryCacheDirectoryService.cs

@@ -0,0 +1,63 @@
+using LibHac;
+using LibHac.Bcat;
+using Ryujinx.Common;
+using System;
+using System.Runtime.InteropServices;
+
+namespace Ryujinx.HLE.HOS.Services.Bcat.ServiceCreator
+{
+    class IDeliveryCacheDirectoryService : IpcService, IDisposable
+    {
+        private LibHac.Bcat.Detail.Ipc.IDeliveryCacheDirectoryService _base;
+
+        public IDeliveryCacheDirectoryService(LibHac.Bcat.Detail.Ipc.IDeliveryCacheDirectoryService baseService)
+        {
+            _base = baseService;
+        }
+
+        [Command(0)]
+        // Open(nn::bcat::DirectoryName)
+        public ResultCode Open(ServiceCtx context)
+        {
+            DirectoryName directoryName = context.RequestData.ReadStruct<DirectoryName>();
+
+            Result result = _base.Open(ref directoryName);
+
+            return (ResultCode)result.Value;
+        }
+
+        [Command(1)]
+        // Read() -> (u32, buffer<nn::bcat::DeliveryCacheDirectoryEntry, 6>)
+        public ResultCode Read(ServiceCtx context)
+        {
+            long position = context.Request.ReceiveBuff[0].Position;
+            long size = context.Request.ReceiveBuff[0].Size;
+
+            byte[] data = new byte[size];
+
+            Result result = _base.Read(out int entriesRead, MemoryMarshal.Cast<byte, DeliveryCacheDirectoryEntry>(data));
+
+            context.Memory.WriteBytes(position, data);
+
+            context.ResponseData.Write(entriesRead);
+
+            return (ResultCode)result.Value;
+        }
+
+        [Command(2)]
+        // GetCount() -> u32
+        public ResultCode GetCount(ServiceCtx context)
+        {
+            Result result = _base.GetCount(out int count);
+
+            context.ResponseData.Write(count);
+
+            return (ResultCode)result.Value;
+        }
+
+        public void Dispose()
+        {
+            _base?.Dispose();
+        }
+    }
+}