[MIRROR] Fixes and buffs Metal Hydrogen golems [MDB IGNORE] (#18659)

* Fixes and buffs Metal Hydrogen golems (#72482)

## About The Pull Request

Metal Hydrogen golems as of now are quite literally not even immune to
_space_ and _the cold_, despite their description insinuating the exact
opposite and their manner of creation being more time-intensive than any
other golem. This PR fixes that, putting them on-par with all other
golems in regards to temperature and space immunity, whilst also
_hugely_ buffing them so they're not simply an antimagic version of
adamantine golems - instead, they're now most metal golems rolled into
one power-wise, with the armor of diamond golems as is befitting.

Also, I fixed their colors and wording (metal hydrogen isn't a
_mineral_, it doesn't naturally occur)

## Why It's Good For The Game

Creating metal hydrogen golems is not wholly difficult if you understand
atmospherics and practice safety in doing so, but compared to all other
golems they are _woefully_ underpowered and nigh-useless in most
practical applications. Adamantine golems are better in effectively
every way, and they're the standard for easily-created golems. Properly
fixing them and buffing them to ensure they're worth making is an
effective way to make metal hydrogen a more worthy endeavor for
atmospherics, and also metal hydrogen is simply cool.

## Changelog

🆑
fix: metal hydrogen golems no longer die to low pressures and cold
temperatures
fix: metal hydrogen golems are no longer solid white, and are now the
actual color of metal hydrogen
balance: metal hydrogen golems are also now immune to most environmental
threats, and get more armor
/🆑

Co-authored-by: ATH1909 <42606352+ATH1909@ users.noreply.github.com>

* Fixes and buffs Metal Hydrogen golems

Co-authored-by: dawsonkeyes <76002401+dawsonkeyes@users.noreply.github.com>
Co-authored-by: ATH1909 <42606352+ATH1909@ users.noreply.github.com>
Co-authored-by: GoldenAlpharex <jerego1234@hotmail.com>

code/modules/mob/living/carbon/human/species_types/golems.dm

@@ -1339,25 +1339,32 @@
 	QDEL_NULL(cryo)
 	return ..()
 
-/datum/species/golem/mhydrogen
+/datum/species/golem/mhydrogen //Effectively most other metal-based golem types rolled into one - immune to all weather, lava, flashes, and magic, while being just as hardened as diamond golems.
 	name = "Metallic Hydrogen Golem"
 	id = SPECIES_GOLEM_HYDROGEN
-	fixed_mut_color = "#dddddd"
-	info_text = "As a <span class='danger'>Metallic Hydrogen Golem</span>, you were forged in the highest pressures and the highest heats. Your unique mineral makeup makes you immune to most types of damages."
+	fixed_mut_color = "#535469"
+	armor = 70 //equal to a diamond golem
+	info_text = "As a <span class='danger'>Metallic Hydrogen Golem</span>, you were forged in the highest pressures and the highest heats. Your unique material makeup makes you immune to magic and most environmental damage, while helping you resist most other attacks."
 	prefix = "Metallic Hydrogen"
-	special_names = null
+	special_names = list("Pressure","Crush")
 	inherent_traits = list(
-		TRAIT_ADVANCEDTOOLUSER,
-		TRAIT_CAN_STRIP,
 		TRAIT_GENELESS,
-		TRAIT_LITERATE,
 		TRAIT_NOBREATH,
 		TRAIT_NODISMEMBER,
 		TRAIT_NOFIRE,
 		TRAIT_NOFLASH,
+		TRAIT_PIERCEIMMUNE,
 		TRAIT_RADIMMUNE,
+		TRAIT_RESISTCOLD,
 		TRAIT_RESISTHEAT,
 		TRAIT_RESISTHIGHPRESSURE,
+		TRAIT_RESISTLOWPRESSURE,
+		TRAIT_NOBLOOD,
+		TRAIT_ADVANCEDTOOLUSER,
+		TRAIT_CAN_STRIP,
+		TRAIT_LITERATE,
+		TRAIT_WEATHER_IMMUNE,
+		TRAIT_LAVA_IMMUNE,
 	)
 	examine_limb_id = SPECIES_GOLEM