Implements some of the helpers I made for #90354 (#90436)

## About The Pull Request
Adds a couple helpers from #90354

1. `/proc/pick_recursive()` > able to take in nested lists and pick one
object from them. Works the same way `pick_weight_recursive()` does,
just without all the extra `_weight` stuff
2. `span_tinynicegreen()` > we had span_tiny for danger and notice but
not nicegreen, just filling that gap
3. `/matrix/proc/get_angle()` > Tells us the angle a matrix is currently
in
4. `GLOB.all_tool_behaviours` > in case you wanted an easy list for all
tool behaviors
5. `transition_filter_chain()` > a more complicated one, this is used if
you want to make an animation chain for a filter. (Thank you
LemonInTheDark for the help on this one.)
## Why It's Good For The Game

Helpful stuff for future coders is good
## Changelog
🆑 Wallem, LemonInTheDark 
code: Added a couple helpers & procs for coders
/🆑

code/modules/surgery/organs/internal/heart/heart_anomalock.dm

@@ -118,10 +118,6 @@
 	balloon_alert(organ_owner, "your heart strengthtens")
 	playsound(organ_owner, 'sound/items/eshield_recharge.ogg', 40)
 
-///Returns the mob we are implanted in so that the electricity effect doesn't runtime
-/obj/item/organ/heart/cybernetic/anomalock/proc/get_held_mob()
-	return owner
-
 /obj/item/organ/heart/cybernetic/anomalock/item_interaction(mob/living/user, obj/item/tool, list/modifiers)
 	if(!istype(tool, required_anomaly))
 		return NONE