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/admin/verbs/light_debug.dm

@@ -10,7 +10,7 @@
 		sum[source.source_atom.type] += 1
 		total += 1
 
-	sum = sortTim(sum, /proc/cmp_numeric_asc, TRUE)
+	sortTim(sum, associative = TRUE)
 	var/text = ""
 	for(var/type in sum)
 		text += "[type] = [sum[type]]\n"