More PSG changes (#17503)

* Berserker PSG

* Makes PSGs more acquirable.

- Makes PSGs more acquirable
- Standardizes the PSG names (PSG Variant-XXX)
- Adds the PSG-BIO to the CMO's locker and CMO supply crate(Just reduces toxin/oxygen/clone attack damage taken)
- Adds the PSG-Melee to the Pathfinder locker
- Adds the PSG-BIO to the Pathfinder Medic locker
- Adds the PSG-S to HoS locker (and HoS supply pack)
- Makes it so the Exploration shield pack has a melee and upgraded mining (mob combat) PSG

code/modules/mob/_modifiers/modifiers_misc.dm

@@ -437,3 +437,11 @@ the artifact triggers the rage.
 	stacks = MODIFIER_STACK_EXTEND
 
 	slowdown = 2
+
+/datum/modifier/trait/thickdigits
+	name = "Thick Digits"
+	desc = "Your hands cannot properly wield weapons."
+
+/datum/modifier/rednet //Not used here currently, but used downstream. Todo: Port it.
+	mob_overlay_state = "red_electricity_constant"
+	slowdown = 1

code/modules/mob/_modifiers/modifiers_vr.dm

@@ -333,3 +333,45 @@
 	max_hal_resistance = 0
 	min_hal_resistance = 0
 	effective_hal_resistance = 1
+
+/datum/modifier/shield_projection/melee_focus
+
+	//You are expected to be taking a LOT more hits while this is up.
+	damage_cost = 5
+
+	//.50% resistance at a full charge, 35% resistance at when we're about to empty.
+	max_brute_resistance = 0.5
+	min_brute_resistance = 0.65
+	effective_brute_resistance = 1
+
+	//.50% resistance at a full charge, 35% resistance at when we're about to empty.
+	max_fire_resistance = 0.5
+	min_fire_resistance = 0.65
+	effective_fire_resistance = 1
+
+	//500% damage taken from halloss. Anti PVP. This is meant to be a PvE weapon.
+	//This also means that mobs that deal halloss will wreck users of this...Those are (extremely) rare as far as I know.
+	min_hal_resistance = 5
+	max_hal_resistance = 5
+	effective_hal_resistance = 1
+
+	//Stuns are HALF as long. Get stunned for 4 seconds? Only stunned for 2, now.
+	disable_duration_percent = 0.5
+
+	//You are QUITE harder to shoot.
+	evasion = 35
+
+	//You move SOMEWHAT faster.
+	slowdown = -0.5
+
+	//You can't shoot, though. This isn't actually used as this modifier is checked in gun.dm, but it's here anyways.
+	accuracy = -1000
+
+	//You attack SOMEWHAT faster
+	attack_speed_percent = 0.8
+
+	//You hit SOMEWHAT harder
+	outgoing_melee_damage_percent = 1.25
+
+	//You bleed SLIGHTLY slower, since you are taking more hits.
+	bleeding_rate_percent = 0.75