* Refactoring HOS folder structure
Refactoring HOS folder structure:
- Added some subfolders when needed (Following structure decided in private).
- Added some `Types` folders when needed.
- Little cleanup here and there.
- Add services placeholders for every HOS services (close#766 and #753).
* Remove Types namespaces
* Started to rewrite the thread scheduler
* Add a single core-like scheduling mode, enabled by default
* Clear exclusive monitor on context switch
* Add SetThreadActivity, misc fixes
* Implement WaitForAddress and SignalToAddress svcs, misc fixes
* Misc fixes (on SetActivity and Arbiter), other tweaks
* Rebased
* Add missing null check
* Rename multicore key on config, fix UpdatePriorityInheritance
* Make scheduling data MLQs private
* nit: Ordering
* 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
