Migrate friends service to new IPC (#6174)

* Migrate friends service to new IPC

* Add a note that the pointer buffer size and domain counts are wrong

* Wrong length

* Format whitespace

* PR feedback

* Fill in structs from PR feedback

* Missed that one

* Somehow forgot to save that one

* Fill in enums from PR review

* Language enum, NotificationTime

* Format whitespace

* Fix the warning

src/Ryujinx.Horizon/ServiceTable.cs

@@ -1,5 +1,6 @@
 using Ryujinx.Horizon.Arp;
 using Ryujinx.Horizon.Bcat;
+using Ryujinx.Horizon.Friends;
 using Ryujinx.Horizon.Hshl;
 using Ryujinx.Horizon.Ins;
 using Ryujinx.Horizon.Lbl;
@@ -39,6 +40,7 @@ namespace Ryujinx.Horizon
 
             RegisterService<ArpMain>();
             RegisterService<BcatMain>();
+            RegisterService<FriendsMain>();
             RegisterService<HshlMain>();
             RegisterService<InsMain>();
             RegisterService<LblMain>();