* 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
* Fix typos
* Remove unneeded using statements
* Enforce var style more
* Remove redundant qualifiers
* Fix some indentation
* Disable naming warnings on files with external enum names
* Fix build
* Mass find & replace for comments with no spacing
* Standardize todo capitalization and for/if spacing
* Implement contentmanager and related services
* small changes
* read system firmware version from nand
* add pfs support, write directoryentry info for romfs files
* add file check in fsp-srv:8
* add support for open fs of internal files
* fix filename when accessing pfs
* use switch style paths for contentpath
* close nca after verifying type
* removed publishing profiles, align directory entry
* fix style
* lots of style fixes
* yasf(yet another style fix)
* yasf(yet another style fix) plus symbols
* enforce path check on every fs access
* change enum type to default
* fix typo
* 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
