* Nonfunctional greyscale code
* Functional greyscale sprites via filter
Probably going to set the icon instead later
* Switches to greyscale json config
* Adds the reference layer type and converts the other canister types
* Working previews
* Adds readme
* Fixes overlays and breaking
* Removes old canister sprites
* Removes an unused var
* Fixes tgui lints
* Removes a bunch of the old canister icon states
Yeah I need to fix relabeling as well
* Removes some debug sprites
* Sorts canister type list and breaks up base shader step
* Removes an unnecessary preview hack
* Makes prototype canister greyscale
* Properly sizes the ui
* Fills in the canister map sprite
* Adds some more warnings to layers
* Makes broken overlay more prominent
* Removes a preview var that isn't needed anymore
* Cleans up client ref in Destroy
* Cleans up the tgui window a bit
* Update GreyscaleModifyMenu.tsx
* Animates the canister falling over
* Removes a commented out line that's no longer needed
Co-authored-by: Aleksej Komarov <stylemistake@gmail.com>