Targeting Datums Renamed (and global) (#79513)

## About The Pull Request

[Implements the backend required to make targeting datums
global](https://github.com/tgstation/tgstation/commit/6901ead12e419530b7f646ea21094d4432d7385e)

It's inconsistent with the rest of basic ai for these to have a high
degree of state, plus like, such a waste yaknow?

[Implements
GET_TARGETING_STRATEGY](https://github.com/tgstation/tgstation/commit/d79c29134d03424a9f8bacd64c08cb41775fe8c0)

Regexes used:
new.*(/datum/targetting_datum[^,(]*)\(*\)* -> GET_TARGETING_STRATEGY($1)

Renamed all instances of targetting to targeting (also targetting datum
-> targeting strategy)

I've used GET_TARGETING_STRATEGY at the source where the keys are
actually used, rather then in the listing. This works out just fine.

## Why It's Good For The Game

Not a misspelled name through the whole codebase, very slightly less
memory load for basically no downside (slight cpu cost maybe but not a
significant one.

---------

Co-authored-by: John Willard <53777086+JohnFulpWillard@users.noreply.github.com>

code/modules/mob/living/basic/cult/constructs/_construct.dm

@@ -68,7 +68,7 @@
 			heal_time = 0,\
 			valid_targets_typecache = typecacheof(list(/mob/living/basic/construct, /mob/living/basic/shade)),\
 			valid_biotypes = MOB_MINERAL | MOB_SPIRIT,\
-			self_targetting = can_repair_self ? HEALING_TOUCH_ANYONE : HEALING_TOUCH_NOT_SELF,\
+			self_targeting = can_repair_self ? HEALING_TOUCH_ANYONE : HEALING_TOUCH_NOT_SELF,\
 			action_text = "%SOURCE% begins repairing %TARGET%'s dents.",\
 			complete_text = "%TARGET%'s dents are repaired.",\
 			show_health = TRUE,\