* Customizable GAGS Witch Hat (#72477)
## About The Pull Request
Implements new sprites for the witch (Marisa) hat, divided into three
greyscale icon states - base, bow, and charms. The hat can have its
colours customized at an AutoDrobe. The not fake version has also been
changed in the same way. The default colours are approximately the same
to the old hat's.

_A coven of witches showing off their newly colourable hats_
## Why It's Good For The Game
More customization options for clothes allow for more variety and
greater player creativity.
## Changelog
🆑
add: added greyscale json configs for witch hat and witch hat worn.
imageadd: Added new, greyscale states to head/wizard.dmi
imagedel: Removed Marisa hat states from head/wizard.dmi
code: changed Marisa hat code in wiz_robes.dm to make them use
greyscale.
config: changed greyscale configs to include the witch hat.
/🆑
* Customizable GAGS Witch Hat
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Co-authored-by: Kepteyn <94123167+Kepteyn@users.noreply.github.com>