Code style fixes and nits on the HLE project (#355)

* 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

Ryujinx.HLE/HOS/Kernel/ThreadQueue.cs

@@ -0,0 +1,158 @@
+namespace Ryujinx.HLE.HOS.Kernel
+{
+    class ThreadQueue
+    {
+        private const int LowestPriority = 0x3f;
+
+        private SchedulerThread Head;
+
+        private object ListLock;
+
+        public ThreadQueue()
+        {
+            ListLock = new object();
+        }
+
+        public void Push(SchedulerThread Wait)
+        {
+            lock (ListLock)
+            {
+                //Ensure that we're not creating circular references
+                //by adding a thread that is already on the list.
+                if (HasThread(Wait))
+                {
+                    return;
+                }
+
+                if (Head == null || Head.Thread.ActualPriority >= Wait.Thread.ActualPriority)
+                {
+                    Wait.Next = Head;
+
+                    Head = Wait;
+
+                    return;
+                }
+
+                SchedulerThread Curr = Head;
+
+                while (Curr.Next != null)
+                {
+                    if (Curr.Next.Thread.ActualPriority >= Wait.Thread.ActualPriority)
+                    {
+                        break;
+                    }
+
+                    Curr = Curr.Next;
+                }
+
+                Wait.Next = Curr.Next;
+                Curr.Next = Wait;
+            }
+        }
+
+        public SchedulerThread Pop(int Core, int MinPriority = LowestPriority)
+        {
+            lock (ListLock)
+            {
+                int CoreMask = 1 << Core;
+
+                SchedulerThread Prev = null;
+                SchedulerThread Curr = Head;
+
+                while (Curr != null)
+                {
+                    KThread Thread = Curr.Thread;
+
+                    if (Thread.ActualPriority <= MinPriority && (Thread.CoreMask & CoreMask) != 0)
+                    {
+                        if (Prev != null)
+                        {
+                            Prev.Next = Curr.Next;
+                        }
+                        else
+                        {
+                            Head = Head.Next;
+                        }
+
+                        break;
+                    }
+
+                    Prev = Curr;
+                    Curr = Curr.Next;
+                }
+
+                return Curr;
+            }
+        }
+
+        public bool Remove(SchedulerThread Thread)
+        {
+            lock (ListLock)
+            {
+                if (Head == null)
+                {
+                    return false;
+                }
+                else if (Head == Thread)
+                {
+                    Head = Head.Next;
+
+                    return true;
+                }
+
+                SchedulerThread Prev = Head;
+                SchedulerThread Curr = Head.Next;
+
+                while (Curr != null)
+                {
+                    if (Curr == Thread)
+                    {
+                        Prev.Next = Curr.Next;
+
+                        return true;
+                    }
+
+                    Prev = Curr;
+                    Curr = Curr.Next;
+                }
+
+                return false;
+            }
+        }
+
+        public bool Resort(SchedulerThread Thread)
+        {
+            lock (ListLock)
+            {
+                if (Remove(Thread))
+                {
+                    Push(Thread);
+
+                    return true;
+                }
+
+                return false;
+            }
+        }
+
+        public bool HasThread(SchedulerThread Thread)
+        {
+            lock (ListLock)
+            {
+                SchedulerThread Curr = Head;
+
+                while (Curr != null)
+                {
+                    if (Curr == Thread)
+                    {
+                        return true;
+                    }
+
+                    Curr = Curr.Next;
+                }
+
+                return false;
+            }
+        }
+    }
+}