Refactoring HOS folder structure (#771)

* 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

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

@@ -1,10 +1,11 @@
-using System;
+using Ryujinx.Common;
+using Ryujinx.HLE.Utilities;
+using System;
 using System.IO;
 using System.Runtime.InteropServices;
 using System.Text;
-using Ryujinx.Common;
-using Ryujinx.HLE.Utilities;
-using static Ryujinx.HLE.HOS.Services.Time.TimeZoneRule;
+
+using static Ryujinx.HLE.HOS.Services.Time.TimeZone.TimeZoneRule;
 
 namespace Ryujinx.HLE.HOS.Services.Time.TimeZone
 {
@@ -238,9 +239,8 @@ namespace Ryujinx.HLE.HOS.Services.Time.TimeZone
         {
             seconds = 0;
 
-            int num;
 
-            bool isValid = GetNum(name, ref namePosition, out num, 0, HoursPerDays * DaysPerWekk - 1);
+            bool isValid = GetNum(name, ref namePosition, out int num, 0, HoursPerDays * DaysPerWekk - 1);
             if (!isValid)
             {
                 return false;