Buffs the tesla cannon and makes it hitscan (#88929)

## About The Pull Request

The tesla cannon now shoots hitscan lightning bolts instead of the
extremely weak tesla orbs.
The damage of these bolts is 15, 5 of which is raw BURN damage, and 10
that comes from a shock, in a similar fashion to the 5 shock damage the
old iteration of the projectiles did.

## Why It's Good For The Game

(Hopefully) Makes one of the worst anomalocked items available into a
decent weapon that can compare, and possibly surpass the much more
widely available laser carbine.
For reference, this is hitscan, deals 50% more damage, but has 7 less
shots in the magazine, which I consider a fair gain due to the anomaly
core used.
Aditionally, I kept the functionality of dealing less damage to people
without full body insulation (which was the idea behind the shock
damage), although now it's no longer full immunity to this gun.

## Changelog

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🆑
balance: The tesla cannon now fires hitscan lightning bolts with buffed
damage to non-insulated targets.
balance: Flux anomalies now have a limit of 5 per round, instead of 8.
/🆑

code/modules/projectiles/projectile/energy/tesla.dm

@@ -26,11 +26,16 @@
 	damage = 15 //Mech man big
 
 /obj/projectile/energy/tesla_cannon
-	name = "tesla orb"
-	icon_state = "ice_1"
-	damage = 0
-	speed = 0.66
-	var/shock_damage = 5
+	name = "tesla bolt"
+	hitscan = TRUE
+	damage = 5
+	var/shock_damage = 10
+	var/datum/beam/chain
+
+/obj/projectile/energy/tesla_cannon/fire(setAngle)
+	if(firer)
+		chain = firer.Beam(src, icon_state = "lightning[rand(1, 12)]", time = 0.5 SECONDS)
+	return ..()
 
 /obj/projectile/energy/tesla_cannon/on_hit(atom/target, blocked = 0, pierce_hit)
 	. = ..()