Code cleanup: Sorting (#83017)

## About The Pull Request
1. Removes code duplication 
2. Fully documents `sortTim()`
3. Makes a define with default sortTim behavior, straight and to the
point for 95% of cases
4. Migrates other sorts into the same file
5. Removes some redundancy where they're reassigning a variable using an
in place sorter

For the record, we only use timSort
## Why It's Good For The Game
More documentation, easier to read, uses `length` over `len`, etc
Should be no gameplay effect at all

code/modules/asset_cache/assets/uplink.dm

@@ -9,7 +9,7 @@
 	var/list/items = list()
 	for(var/datum/uplink_category/category as anything in subtypesof(/datum/uplink_category))
 		categories += category
-	categories = sortTim(categories, GLOBAL_PROC_REF(cmp_uplink_category_desc))
+	sortTim(categories, GLOBAL_PROC_REF(cmp_uplink_category_desc))
 
 	var/list/new_categories = list()
 	for(var/datum/uplink_category/category as anything in categories)