Persistence code refactoring (#22044)

# Summary

This PR refactores code and structure of the current persistence
subsystem, in preparation for Persistency: Circles, Squares and
Triangles.

This should not contain any user facing changes.

~~This PR is based of branch #21925 and **needs** to be merged in order.
The files changed display will be meaningless until then.~~ *Done.*

## Changes

- Split subsystem in partial files.
- Refactored proc names, added "persistentObject" format for current
code.
- Renamed SQL table.
- Refactored logging and call hiearachy.
- Fix CI labeler adding DB label on non-SQL files.

code/game/objects/structures/inflatable.dm

@@ -293,7 +293,7 @@
 	icon_state = "folded_wall-torn"
 	persistency_considered_trash = TRUE
 
-/obj/item/inflatable/torn/persistence_apply_content(content, x, y, z)
+/obj/item/inflatable/torn/persistent_objects_apply_content(content, x, y, z)
 	src.x = x
 	src.y = y
 	src.z = z
@@ -308,7 +308,7 @@
 	icon_state = "folded_door-torn"
 	persistency_considered_trash = TRUE
 
-/obj/item/inflatable/door/torn/persistence_apply_content(content, x, y, z)
+/obj/item/inflatable/door/torn/persistent_objects_apply_content(content, x, y, z)
 	src.x = x
 	src.y = y
 	src.z = z

code/game/objects/structures/noticeboard.dm

@@ -36,7 +36,7 @@
 		user.drop_from_inventory(attacking_item, src)
 		notices++
 		update_icon()
-		SSpersistence.register_track(attacking_item, ckey(usr.key)) // Add paper to persistent tracker
+		SSpersistence.objectsRegisterTrack(attacking_item, ckey(usr.key)) // Add paper to persistent tracker
 		to_chat(user, SPAN_NOTICE("You pin the paper to the noticeboard."))
 	else
 		to_chat(user, SPAN_NOTICE("\The [src] is already full of papers and can not fit another."))
@@ -71,7 +71,7 @@
 			add_fingerprint(usr)
 			notices--
 			update_icon()
-			SSpersistence.deregister_track(P) // Remove paper from persistent tracker
+			SSpersistence.objectsDeregisterTrack(P) // Remove paper from persistent tracker
 	if(href_list["write"])
 		if((usr.stat || usr.restrained())) //For when a player is handcuffed while they have the notice window open
 			return