* refactoring result codes
- Add a main enum who can handle some orphalin result codes and the default `ResultCode.Success` one.
- Add sub-enum by services when it's needed.
- Remove some empty line.
- Recast all service calls to ResultCode.
- Remove some unneeded static declaration.
- Delete unused `NvHelper` class.
* NvResult is back
* Fix
* Refactoring commands handling
- Use Reflection to handle commands ID.
- Add all symbols (from SwIPC so not all time accurate).
- Re-sort some services commands methods.
- Some cleanup.
- Keep some empty constructor for consistency.
* Fix order in IProfile
* IPC services refactoring
- Use custom Attributes to handle services.
- Add a way to set the permissions and fix the bsd service to use it.
- Little cleanup.
- C#7.1 is required.
* fix var name
* fix syntax
* Change Permission to Parameter
* Delete BsdServicePermissionLevel.cs
* Fix Linq
* Clean up ITimeZoneService
Add error codes and simplify parsing
* Add accurate timezone logic
TOOD: LoadTimeZoneRule and location name cmds.
* Integrate the new TimeZone logic
* SCREAMING_UNIX_CASE => PascalCase
* Address comments
* Reduce use of pointer in the LoadTimeZoneRule logic
* Address comments
* Realign tzIfStream logic in LoadTimeZoneRule
* Address gdk's comments
* Some style fixes and nits on ITimeZoneService
* Remove some unneeded usings
* Remove the Ryujinx.HLE.OsHle.Handles namespace
* Remove hbmenu automatic load on process exit
* Rename Ns to Device, rename Os to System, rename SystemState to State
* Move Exceptions and Utilities out of OsHle
* Rename OsHle to HOS
* Rename OsHle folder to HOS
* IManagerDisplayService and ISystemDisplayService style fixes
* BsdError shouldn't be public
* Add a empty new line before using static
* Remove unused file
* Some style fixes on NPDM
* Exit gracefully when the application is closed
* Code style fixes on IGeneralService
* Add 0x prefix on values printed as hex
* Small improvements on finalization code
* Move ProcessId and ThreadId out of AThreadState
* Rename VFs to FileSystem
* FsAccessHeader shouldn't be public. Also fix file names casing
* More case changes on NPDM
* Remove unused files
* Move using to the correct place on NPDM
* Use properties on KernelAccessControlMmio
* Address PR feedback
