Adds the Herculean Gravitronic Spinal Implant; An Athletics focused implant. (#84532)

## About The Pull Request

Adds the Herculean Gravitronic Spinal Implant. A personal gravity
dampener that affords the user improved physical performance without all
the effort of actually working out.

This implant improves the user's ability in a variety of minor but
useful ways Including;

1) Faster climbing speeds with climbing hooks and ladders. (Athletics
now also influences this time)
2) Slightly less damage from falling from a height.
3) Faster fireman lifting and placing onto tables.
4) An easier time working out and stronger in boxing.
5) Standing up just a bit faster.
6) Throwing things just a little further.
7) Tackle performance, including offense, defense and safety if you
miss.

You can improve the implant by using a gravity anomaly core on it,
transforming it into an Atlas implant. This implant has considerably
better bonuses compared to the baselines fairly minor even if numerous
benefits. It also forces personal gravity to normal values.

As a result, the total number of gravity anomaly cores is now 6.


![image](https://github.com/tgstation/tgstation/assets/40847847/11180524-9e5a-4146-922f-1b935ff34764)

Has some little floating rocks around your head while active.

## Why It's Good For The Game

I attempted to add something fairly similar in the past, but didn't
quite like simply making an entirely combat related implant. Instead,
I've changed the concept towards generally improving some minor physical
world interactions. Things that you may not really think about or
notice.

I really enjoy getting just slight tweaks to the small little gameplay
activities that come up every so often, and even if this won't appeal to
most players, I know someone will see this and think to find a way to
make the most of the implant in some way that I didn't even think about.

## Changelog
🆑
add: Adds the Herculean Gravitronic Spinal Implant; an implant that
makes you better at athletics. You can upgrade it into an Atlas implant
using a gravity anomaly core.
balance: Gravity anomaly cores have had their max number of cores
reduces from 8 to 6.
balance: Your athletic ability allows you to climb faster.
/🆑

code/modules/research/designs/medical_designs.dm

@@ -566,6 +566,24 @@
 	)
 	departmental_flags = DEPARTMENT_BITFLAG_MEDICAL
 
+/datum/design/cyberimp_herculean
+	name = "Herculean Gravitronic Spinal Implant"
+	desc = "This gravitronic spinal interface allows the user to reduce the impact of gravity on their body, effectively improving athletic performance."
+	id = "ci-herculean"
+	build_type = PROTOLATHE | AWAY_LATHE | MECHFAB
+	construction_time = 4 SECONDS
+	materials = list(
+		/datum/material/iron =SMALL_MATERIAL_AMOUNT*5,
+		/datum/material/titanium=SMALL_MATERIAL_AMOUNT*3,
+		/datum/material/gold=SMALL_MATERIAL_AMOUNT*3,
+		/datum/material/diamond =SMALL_MATERIAL_AMOUNT*5,
+	)
+	build_path = /obj/item/organ/internal/cyberimp/chest/spine
+	category = list(
+		RND_CATEGORY_CYBERNETICS + RND_SUBCATEGORY_CYBERNETICS_IMPLANTS_HEALTH
+	)
+	departmental_flags = DEPARTMENT_BITFLAG_MEDICAL
+
 /datum/design/cyberimp_nutriment
 	name = "Nutriment Pump Implant"
 	desc = "This implant will synthesize and pump into your bloodstream a small amount of nutriment when you are starving."

code/modules/research/techweb/nodes/cyborg_nodes.dm

@@ -152,6 +152,7 @@
 		"ci-breather",
 		"ci-nutriment",
 		"ci-thrusters",
+		"ci-herculean",
 	)
 	research_costs = list(TECHWEB_POINT_TYPE_GENERIC = TECHWEB_TIER_3_POINTS)