Cybernetics Improved (waterproof + buffs), removable limbs, fractional repairs

[Nebual]

In case any of this is controversial, I've kept each change in separate commits:

Add changes ported from the Workshop mod Cybernetics Improved (Reviewers note: this commit is solely the reformatted diff from that mod, mechanically unchanged)

• Cyberlegs now make you run faster (when in good condition)
• Cyberarms now make you swim faster and melee stronger
• Added more expensive Waterproof versions of each

And then my own balance tweaks:

• Waterproof Cybernetics: raise recipe cost: extra fulgarium/rubber, and switching the recipe to consume an existing Cyberarm to allow for "upgrading"
• Cybernetics: Hide maintenance afflictions < 5%, just to declutter the UI a bit when there's barely any wear
• Cybernetics: repairs now use a fraction of the material - eg. if someone has 10% electronics damage, that only eats up 20% of the Durability of the FPGA circuit pack. A full repair still uses the same amount of material, this just makes "maintenance top-ups" less punishing.
• Cybernetics: crowbar can remove cyberlimbs in good condition - will cause some bleeding, a lot of bleeding if not medically trained
• Fixed failing cyberlimb installs not causing any damage (as a still-amputated limb couldn't get damaged, so I moved it to Bleeding the Torso instead), also added sound effects
• Fixed Amputation Surgery not granting medical skill
• Allow crowbar to remove cyberlimbs from corpses - the flesh may die but the steel shall endure (it may need to be repaired first though)

[OlegBSTU]

Can't merge - conflict found. Looks like this adds skill gain from amputations, which was in a merged PR a while earlier.