Improved Logger (#1292)

* Logger class changes only

Now compile-time checking is possible with the help of Nullable Value
types.

* Misc formatting

* Manual optimizations

PrintGuestLog
PrintGuestStackTrace
Surfaceflinger DequeueBuffer

* Reduce SendVibrationXX log level to Debug

* Add Notice log level

This level is always enabled and used to print system info, etc...
Also, rewrite LogColor to switch expression as colors are static

* Unify unhandled exception event handlers

* Print enabled LogLevels during init

* Re-add App Exit disposes in proper order

nit: switch case spacing

* Revert PrintGuestStackTrace to Info logs due to #1407

PrintGuestStackTrace is now called in some critical error handlers
so revert to old behavior as KThread isn't part of Guest.

* Batch replace Logger statements

Ryujinx.HLE/HOS/Services/Time/StaticService/ITimeZoneServiceForGlue.cs

@@ -92,7 +92,7 @@ namespace Ryujinx.HLE.HOS.Services.Time.StaticService
             if (bufferSize != 0x4000)
             {
                 // TODO: find error code here
-                Logger.PrintError(LogClass.ServiceTime, $"TimeZoneRule buffer size is 0x{bufferSize:x} (expected 0x4000)");
+                Logger.Error?.Print(LogClass.ServiceTime, $"TimeZoneRule buffer size is 0x{bufferSize:x} (expected 0x4000)");
 
                 throw new InvalidOperationException();
             }