Add multiple calls to am service (#1411)

* Add multiple calls to am service

This implement/stub some am calls:

- SetAutoSleepDisabled
- IsAutoSleepDisabled
- SetAlbumImageTakenNotificationEnabled
- EnableApplicationCrashReport
- GetPreviousProgramIndex
- NeedsToExitProcess
- RequestForAppletToGetForeground
- GetIndirectLayerConsumerHandle

All checked by RE.
Additionnaly to that, there is some cleanup here and there.

Fix #1387, #1324, #1165, #1163, #1065

* Fix casting

* Thread safe assign

Ryujinx.HLE/HOS/Services/Am/ResultCode.cs

@@ -22,6 +22,7 @@ namespace Ryujinx.HLE.HOS.Services.Am
         StackPoolExhausted     = (712 << ErrorCodeShift) | ModuleId,
         DebugModeNotEnabled    = (974 << ErrorCodeShift) | ModuleId,
         DevFunctionNotEnabled  = (980 << ErrorCodeShift) | ModuleId,
-        NotImplemented         = (998 << ErrorCodeShift) | ModuleId
+        NotImplemented         = (998 << ErrorCodeShift) | ModuleId,
+        Stubbed                = (999 << ErrorCodeShift) | ModuleId
     }
 }