nyx: Add time offset

The epoch is based on HOS format.

An automatic time set will be implemented in a later version.

nyx/nyx_gui/config/config.h

@@ -45,6 +45,7 @@ typedef struct _hekate_config
 typedef struct _nyx_config
 {
 	u32 themecolor;
+	s32 timeoff;
 	u32 home_screen;
 	u32 verification;
 } nyx_config;