Reduce most salvage mob health, reduce most salvage weapon damage. (#38131)

[ShepardToTheStars]

About the PR

Upsteam salvage mob health rebalance
(Copied below from upstream PR)

Reduces the HP of all salvage mobs except for the hivelord.
Bear: 100 > 80 [80%]
Kangaroo: 100 > 60 [60%]
Cobra: 100 > 45 [45%]
Spider: 90 > 45 [50%]
Tick: 15 > 5 [33.33%]
Sharkminnow: 150 > 82 [54.66%]
Carp: 40 > 30 [75%] (Does not affect space dragon carp)
Goliath: 250 > 150 [60%]
Hivelord: 75 > 75 [100%] (Meant to be fought with a knife/dagger, which remain unchanged.)
Basilisk: 80 > 50 [62.5%]

Also reduces the damage of all salvage weapons except for the knife and dagger.
Survival Knife: 12 > 12 [100%] (Basic station weapon, base for everything else)
PKA: 25 > 15 [60%]
Crusher Dagger: 12 > 12 [100%] (Should be at least a bit better than the knife, retains autoswing and faster swing speed)
Crusher Axe: 20 > 18 [80%] (Attack rate reduced from 1.5 > 1, in reality the DPS has been reduced to 60%)
Axe mark: 45 > 40 [88.88%] (Healing also reduced from 3.33 in each brute to 2 in each brute, that's the glaive's specialty)
Crusher Glaive: 20 > 18 [80%] (Attack rate reduced from 1.5 > 1, in reality the DPS has been reduced to 60%)
Glaive mark: 45 > 24 [53.33%] (Healing unchanged, will likely change it to favor slash if I rebalance mob damage in the future.)

Slightly changes the glaive description and slightly changes the axe healing.

View the graphs in space-wizards/space-station-14#38131 for TTK.

Why / Balance

This was skipped because we had the old PKA. Now that we have a nerfed PKA, this change should be merged.

Technical details

cherry-pick old PR

Media

Requirements

• I have tested all added content and changes.
• I have added media to this PR or it does not require an in-game showcase.

Licensing

• I confirm that I am the creator of the code in this PR, and allow licensing it under the following license(s), or that the original author(s) has given me permission to do so:
  • AGPL (https://github.com/DeltaV-Station/Delta-v/blob/master/LICENSE-AGPLv3.txt)
  • MIT (https://github.com/DeltaV-Station/Delta-v/blob/master/LICENSE-MIT.txt)

Changelog

🆑 Blackern5000

• tweak: Most salvage enemies have had their HP reduced.
• tweak: Most salvage weapons have had their damage modified to compensate.
• tweak: Crusher projectiles now deal a bit of damage.

[ShepardToTheStars]

Too lazy to re-checkout my branch to undo these two changes.

[CookieBoy21]

I have a question. Xenomorphs from salv expedition will get hp reduction too? Because right now after salv weapons dmg reduction, taking xenos as enemies is like asking for death wish, and carps are just way easier. Also, if something will change in xenos hp, could we get two types of xenos? Like dungeon type and normal type, so sec will not have too easy after few xenos will spawn from event.