Rix header

The RIX3 header are not used in game but is used to view/edit the files.

Offset (byte)	Size (bytes)	Information
0	4	"RIX3"
4	2	image width
6	2	image height
8	1	palette type (usually and also in game files VGA value byte of 175 (hex AF))
9	1	storage type byte, in game files linear, equivalent to value 0

Thank to https://github.com/1Simo1 for this information.