Resprite of xeno spits and abom action icons (#7946)

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# About the pull request

Title

Before:

![dreamseeker_0X1XlVYSUX](https://github.com/user-attachments/assets/c814b173-8320-4ffe-868a-1bbcb391fbc6)


![dreammaker_39cBAo5dI9](https://github.com/user-attachments/assets/39d6f4bc-1020-45bf-a6bf-eab981a2330b)


After:

![dreamseeker_xb77R37x7s](https://github.com/user-attachments/assets/aa24ce88-a542-480e-aed2-3df514fd1915)


![dreammaker_PtJeKcAoDo](https://github.com/user-attachments/assets/62e75053-9eaa-4790-b477-13ec7fd3b1eb)


Now spits that do different damage, have unique sprites, acid spits been
reanimated and reshaded, now having overall better sprite.

Neurotoxin now uses color that actually matches neurotoxin.

All new sprites by Crowford, discord tag sir.crow

Basically port of my thing from
Cosmic-Overlord/RU-TerraGov-Marine-Corps@9532a22

# Explain why it's good for the game

Legacy sprites bad, also better identification of projectiles is good.


# Changelog

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:cl:
add: different xeno spits now have different icon depending on their
damage
imageadd: new neurotoxin spit sprite
imageadd: new predalien action icons
/:cl:

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code/datums/ammo/xeno.dm

@@ -142,7 +142,7 @@
 
 /datum/ammo/xeno/acid
 	name = "acid spit"
-	icon_state = "xeno_acid"
+	icon_state = "xeno_acid_weak"
 	sound_hit  = "acid_hit"
 	sound_bounce = "acid_bounce"
 	damage_type = BURN
@@ -166,7 +166,7 @@
 
 /datum/ammo/xeno/acid/spatter
 	name = "acid spatter"
-
+	icon_state = "xeno_acid_strong"
 	damage = 30
 	max_range = 6
 
@@ -179,7 +179,7 @@
 
 /datum/ammo/xeno/acid/praetorian
 	name = "acid splash"
-
+	icon_state = "xeno_acid_strong"
 	accuracy = HIT_ACCURACY_TIER_10 + HIT_ACCURACY_TIER_5
 	max_range = 8
 	damage = 30
@@ -191,7 +191,7 @@
 
 /datum/ammo/xeno/acid/prae_nade // Used by base prae's acid nade
 	name = "acid scatter"
-
+	icon_state = "xeno_acid_normal"
 	flags_ammo_behavior = AMMO_ACIDIC|AMMO_XENO|AMMO_STOPPED_BY_COVER
 	accuracy = HIT_ACCURACY_TIER_5
 	accurate_range = 32

code/modules/mob/living/carbon/xenomorph/abilities/predalien/predalien_abilities.dm

@@ -1,7 +1,7 @@
 
 /datum/action/xeno_action/onclick/feralrush
 	name = "Feral Rush"
-	action_icon_state = "charge_spit"
+	action_icon_state = "rage"
 	macro_path = /datum/action/xeno_action/verb/verb_feralrush
 	ability_primacy = XENO_PRIMARY_ACTION_1
 	action_type = XENO_ACTION_ACTIVATE
@@ -19,7 +19,7 @@
 
 /datum/action/xeno_action/onclick/predalien_roar
 	name = "Roar"
-	action_icon_state = "screech"
+	action_icon_state = "rage_screech"
 	action_type = XENO_ACTION_CLICK
 	ability_primacy = XENO_PRIMARY_ACTION_2
 	macro_path = /datum/action/xeno_action/verb/verb_predalien_roar
@@ -30,7 +30,7 @@
 
 /datum/action/xeno_action/activable/feral_smash
 	name = "Feral Smash"
-	action_icon_state = "lunge"
+	action_icon_state = "powerful_pounce"
 	action_type = XENO_ACTION_CLICK
 	macro_path = /datum/action/xeno_action/verb/feral_smash
 	ability_primacy = XENO_PRIMARY_ACTION_3
@@ -45,7 +45,7 @@
 
 /datum/action/xeno_action/activable/feralfrenzy
 	name = "Feral Frenzy"
-	action_icon_state = "rav_eviscerate"
+	action_icon_state = "butchering"
 	action_type = XENO_ACTION_CLICK
 	ability_primacy = XENO_PRIMARY_ACTION_4
 	macro_path = /datum/action/xeno_action/verb/verb_feralfrenzy
@@ -65,7 +65,7 @@
 
 /datum/action/xeno_action/onclick/toggle_gut_targeting
 	name = "Toggle Gutting Type"
-	action_icon_state = "gut" // starting targetting is SINGLETARGETGUT
+	action_icon_state = "rav_shard_shed" // starting targetting is SINGLETARGETGUT
 	macro_path = /datum/action/xeno_action/verb/verb_toggle_gut_targeting
 	action_type = XENO_ACTION_ACTIVATE
 	ability_primacy = XENO_PRIMARY_ACTION_5

code/modules/mob/living/carbon/xenomorph/abilities/predalien/predalien_powers.dm

@@ -191,7 +191,7 @@
 		guttype.targeting = AOETARGETGUT
 		to_chat(xeno, SPAN_XENOWARNING("We will now attack everyone around us during a Feral Frenzy."))
 	else
-		action_icon_result = "gut"
+		action_icon_result = "rav_shard_shed"
 		guttype.targeting = SINGLETARGETGUT
 		to_chat(xeno, SPAN_XENOWARNING("We will now focus our Feral Frenzy on one person!"))
 

code/modules/mob/living/simple_animal/hostile/alien.dm

@@ -176,19 +176,3 @@
 
 	pixel_x = -12
 	old_x = -12
-
-// Still using old projectile code - commenting this out for now
-// /mob/living/simple_animal/hostile/alien/sentinel
-// name = "alien sentinel"
-// icon_state = "Sentinel Running"
-// icon_living = "Sentinel Running"
-// icon_dead = "Sentinel Dead"
-// health = 120
-// melee_damage_lower = 15
-// melee_damage_upper = 15
-// ranged = 1
-// projectiletype = /obj/projectile/neurotox
-// projectilesound = 'sound/weapons/pierce.ogg'
-/obj/projectile/neurotox
-	damage = 30
-	icon_state = "toxin"