Adds an universal object health system. (#21266)

https://www.youtube.com/watch?v=ZpUYjpKg9KY

As per title. The goal is to add health to most objects in the game and
thus allow them to be dynamically destructible, while also avoiding
shitcode like each structure having its own snowflake health update
proc.

---------

Signed-off-by: Matt Atlas <mattiathebest2000@hotmail.it>
Co-authored-by: Matt Atlas <liermattia@gmail.com>
Co-authored-by: SleepyGemmy <99297919+SleepyGemmy@users.noreply.github.com>

code/modules/projectiles/projectile.dm

@@ -346,6 +346,12 @@
 	else
 		return 50 //if the projectile doesn't do damage, play its hitsound at 50% volume
 
+/obj/projectile/proc/get_structure_damage_sound()
+	if(damage_type == DAMAGE_BRUTE)
+		return 'sound/effects/metalping.ogg'
+	else if(damage_type == DAMAGE_BURN)
+		return pick(SOUNDS_LASER_METAL)
+
 /obj/projectile/proc/on_ricochet(atom/A)
 	if(!ricochet_auto_aim_angle || !ricochet_auto_aim_range)
 		return
@@ -1226,7 +1232,7 @@
 	if(!P || !P.ping_effect)
 		return
 
-	var/image/I = image('icons/obj/projectiles.dmi', src,P.ping_effect,10, pixel_x = pixel_x_offset, pixel_y = pixel_y_offset)
+	var/image/I = image('icons/obj/projectiles.dmi', src, P.ping_effect, 10, pixel_x = pixel_x_offset, pixel_y = pixel_y_offset)
 	var/angle = (P.firer && prob(60)) ? round(get_angle(P.firer,src)) : round(rand(1,359))
 	I.pixel_x += rand(-6,6)
 	I.pixel_y += rand(-6,6)
@@ -1235,6 +1241,7 @@
 	rotate.Turn(angle)
 	I.transform = rotate
 	// Need to do this in order to prevent the ping from being deleted
+	playsound(src, P.get_structure_damage_sound(), P.vol_by_damage())
 	addtimer(CALLBACK(I, TYPE_PROC_REF(/image, flick_overlay), src, 3), 1)
 
 /image/proc/flick_overlay(var/atom/A, var/duration)

code/modules/projectiles/projectile/bullets.dm

@@ -8,6 +8,7 @@
 	embed = TRUE
 	sharp = TRUE
 	shrapnel_type = /obj/item/material/shard/shrapnel
+	ping_effect = "ping_b"
 	projectile_piercing = PASSMOB|PASSFLAPS|PASSGRILLE //These are the things it can piece, a number of times up to 'penetrating', if it actually does pierce is decided by projectile/prehit_pierce()
 
 	muzzle_type = /obj/effect/projectile/muzzle/bullet