Accurately implement steady & system clocks (#732)

* Improve SteadyClock implementation accuracy

* Rewrite system clocks to be accurate

* Implement IStaticService 100 & 101

* Add time:* permissions

* Address comments

* Realign TimePermissions definitions

* Address gdk's comments

* Fix after rebase

Ryujinx.HLE/HOS/Services/Time/TimePermissions.cs

@@ -0,0 +1,17 @@
+using System;
+
+namespace Ryujinx.HLE.HOS.Services.Time
+{
+    [Flags]
+    enum TimePermissions
+    {
+        LocalSystemClockWritableMask   = 0x1,
+        UserSystemClockWritableMask    = 0x2,
+        NetworkSystemClockWritableMask = 0x4,
+        UnknownPermissionMask          = 0x8,
+
+        User   = 0,
+        Applet = LocalSystemClockWritableMask | UserSystemClockWritableMask | UnknownPermissionMask,
+        System = NetworkSystemClockWritableMask
+    }
+}