Implementation of a TIM2 coder (#1571)

Implementation of a TIM2 coder (#1571)

* Added ScaleColor4to8 and converse functions

* Implementation mostly done

* Build setup

* reordered processing of clut and pixels

* Added support for Shuffled CLUTs

* Revert "Added ScaleColor4to8 and converse functions"

This reverts commit b0bd8a59ccd775fb17fc3d1db312806bf6146d93.

* Added more exceptions thrown when header is incorrect

* created enums and compacted rgb read functions

* Added alpha channel and changed alpha scaling

* Added support for format_type==1

* New define for assigning clut colors

* Changed names to avoid namespace conflicts

* Fixed alpha channel of RGB24 encoding

* Incorporated sanity check into the switch