Unhardcode and limbify attack vectors take two: Electric boogaloo

[Venera3]

Summary

Features "Unhardcode and limbify attack vectors"

Purpose of change

MA attack vectors are hardcoded, undocumented, and prevent further limbification.
Revival of #67883

Describe the solution

Went through a pretty significant restructuring.

• turn attack vectors into their own JSON object
• Add filtering based on selected bodypart encumbrance/health
• Actually integrate into the melee attack sequence
• Define strike surface in a limb-compatible way
• Deprecated attack_override and crit_tec_id for redundancy
• Deprecated the UNARMED_DAMAGE_BONUS mutation flag, and routed the traits using it though integrated armors for the time being (Magiclysm's dragon claws and demon tail)
• Add unarmed damage for sub_bodyparts
• Define force modification to e.g. only use one arm's limb scores for the lifting strength It will be a necessary step towards multiwield but strictly speaking not necessary for the issue at hand and depends on how the modifier chaching will look.
• Allow defining the number of used limbs to facilitate using only the unarmed damage boni of the involved limbs For now we stay at one contact area, otherwise the melee attack logic needs to deal with multiple weapons at the same time so see the previous point. It does mean the tech repeat hack will need to stay for the time being
• Deprecate old vectors and things pointing at them
• Add unarmed attacks to vanilla limbs - a kick for each feet, a basic punch and a headbutt. Going forward untyped unarmed attacks shouldn't really be a thing
• Update all techs, check tech logic - filtering enough legs for kicks, that sort of thing
• Move basic fang attacks and co over to using their contact area armor for the damage instead of a flat bonus
• Documentation
• Eleven billion unit tests Best I can do is three.
• Calculate unarmed damage from the material covering the actual contact area (currently steel-toed boots would do the same damage on a toe hit as on a heel one) silly me thought armor unarmed damage was dynamically generated based on materials/properties. how naive I was

Describe alternatives you've considered

Stick to limb numbers but this will be huge enough as it is.
Leave attack_override, but vectors as such make it redundant.

Testing

Compiles, complains about wrong definitions.
Tech filters work, vector choice takes damages into account properly, restricted natural attacks don't apply their damage.

Additional context

Since the sublimb system was set up with armor in mind not strike surfaces I had to take some liberties - punches use your fingers, that sort of thing. The good news is that's all JSON to fix, the bad news is I won't audit every armor item ever to add every tiny strike surface. I've also had limited patience to tracking down a video of most moves so the field's open if somebody wants to add a vector just for pinching with your third finger while punching.

Moved the Fang techs into their dedicated file and removed their intrinsic movecost/damage (moving the latter to the integrated armor bit).

[GuardianDll]

Do you happen to touch this piece of code?

Cataclysm-DDA/src/melee.cpp

Lines 1853 to 1865 in 85926f2

	if( technique.needs_ammo ) {
	const itype_id current_ammo = cur_weapon.get_item()->ammo_current();
	// if the weapon needs ammo we now expend it
	cur_weapon.get_item()->ammo_consume( 1, pos(), this );
	// thing going off should be as loud as the ammo
	sounds::sound( pos(), current_ammo->ammo->loudness, sounds::sound_t::combat, _( "Crack!" ), true );
	const itype_id casing = *current_ammo->ammo->casing;
	if( cur_weapon.get_item()->has_flag( flag_RELOAD_EJECT ) ) {
	cur_weapon.get_item()->force_insert_item( item( casing ).set_flag( flag_CASING ),
	pocket_type::MAGAZINE );
	cur_weapon.get_item()->on_contents_changed();
	}
	}

I have pending #70308 related to it, tho it might not be useful for limbs

[Venera3]

Do you happen to touch this piece of code?

Cataclysm-DDA/src/melee.cpp

Lines 1853 to 1865 in 85926f2

	if( technique.needs_ammo ) {
	const itype_id current_ammo = cur_weapon.get_item()->ammo_current();
	// if the weapon needs ammo we now expend it
	cur_weapon.get_item()->ammo_consume( 1, pos(), this );
	// thing going off should be as loud as the ammo
	sounds::sound( pos(), current_ammo->ammo->loudness, sounds::sound_t::combat, _( "Crack!" ), true );
	const itype_id casing = *current_ammo->ammo->casing;
	if( cur_weapon.get_item()->has_flag( flag_RELOAD_EJECT ) ) {
	cur_weapon.get_item()->force_insert_item( item( casing ).set_flag( flag_CASING ),
	pocket_type::MAGAZINE );
	cur_weapon.get_item()->on_contents_changed();
	}
	}

I have pending #70308 related to it, tho it might not be useful for limbs

The problem is we chose the technique first using the wielded weapon (IE the ammo-and-tech-giving armor is not the weapon yet), evaluate if the weapon has ammo (it doesn't) and disable the technique.
Mid-term I do want to decouple techs from crits, which means we get to first choose which attack we are attempting including vector and weapon used, but that's out of scope for this PR.

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