Particle editor (#71110)

## About The Pull Request
Demo: https://streamable.com/wnj3mf

Features:
- Full support for most gradients/vectors/numbers/generators/transforms
( I might have forgotten some of the more esoteric ones)
- A "tutorial" section that explains the different rand/generation types
and how physics works with pictures
- Button for viewing what each var does
- Selecting a particle type to set immediately
- The generator types use defines now

Not included:
Color matrix support for color generators (I'm sorry but hell no)

Special thanks to @jlsnow301 for explaining js things to me

## Why It's Good For The Game

Making cool stuf

## Changelog
🆑
refactor: Added a particle editor to VV dropdown which can be used by
coders and admins to edit particle values on the fly easily.
/🆑

Co-authored-by: TiviPlus <572233640+TiviPlus@users.noreply.com>

code/modules/asset_cache/assets/particle_editor.dm

@@ -0,0 +1,17 @@
+/datum/asset/simple/particle_editor
+	assets = list(
+		"motion" = 'icons/ui_icons/particle_editor/motion.png',
+
+		"uniform" = 'icons/ui_icons/particle_editor/uniform_rand.png',
+		"normal" ='icons/ui_icons/particle_editor/normal_rand.png',
+		"linear" = 'icons/ui_icons/particle_editor/linear_rand.png',
+		"square_rand" = 'icons/ui_icons/particle_editor/square_rand.png',
+
+		"num" = 'icons/ui_icons/particle_editor/num_gen.png',
+		"vector" = 'icons/ui_icons/particle_editor/vector_gen.png',
+		"box" = 'icons/ui_icons/particle_editor/box_gen.png',
+		"circle" = 'icons/ui_icons/particle_editor/circle_gen.png',
+		"sphere" = 'icons/ui_icons/particle_editor/sphere_gen.png',
+		"square" = 'icons/ui_icons/particle_editor/square_gen.png',
+		"cube" = 'icons/ui_icons/particle_editor/cube_gen.png',
+	)