fix: differentiate more SPEAR and STAB flag

[End3r991]

Purpose of change

Note

same as #4211 due to branch issues

Splitting up "SPEAR" flag and "STAB" flag so they can be used separately, allowing the ability to reach attack through bars with cutting weapons that should be able to do it.

Describe the solution

"SPEAR" flag does not transform cut damage into pierce damage anymore, still allowing the ability to attack through bars with reach weapons, while only "STAB" flag change cut damage into pierce damage. Added the "STAB" flag to all weapons that previously had only "SPEAR" flag, so they continue do pierce damage, and added the "SPEAR" flag to some weapons that should be able to reach attack through bars, while still doing cut damage.

Describe alternatives you've considered

Not adding the "SPEAR" flag to any cut damage weapon, waiting for an actual flag/technique (need hardcode) to allow to cut damage weapons to do pierce damage while performing reach attack through bars.

Testing

Weapons with adjusted "SPEAR" and "STAB" flag work as inteded.

Additional context

Ideally, it would have more sense that weapons that do cut damage and can reach attack through bars, would do pierce damage while attacking through bars, and not continuing doing cut damage, but that would need follow-up PR to make it possible.

Checklist

If this is a C++ PR that modifies JSON loading or behavior:

• Document the changes in the appropriate location in the doc/ folder.
• If documentation for this feature does not exist, please write it or at least note its lack in PR description.
• New localizable fields need to be added to the lang/bn_extract_json_strings.sh script if it does not support them yet.
• If applicable, add checks on game load that would validate the loaded data.
• If it modifies format of save files, please add migration from the old format.

[scarf005]

Changes look good. I've also included migration script and documentation. Approving as local tests pass.

[chaosvolt]

Items overlooked, as pointed out in my change request for the previous PR:

• lucern_hammer, whether it warrants this is subjective (json\items\melee\bludgeons.json)
• lucern_hammerfake only if given to regular lucerne hammer (json\items\melee\bludgeons.json)
• rune_biomancer_weapon (mods\Magiclysm\items\enchanted_melee.json)
• bonespear (mods\Magiclysm\items\ethereal_items.json)
• lizardfolk_trident (mods\Magiclysm\items\weapons.json)

Since the addition of the flag to glaives and halberds got approved then lucerne hammer might be acceptable to add it to but still potentially borderline. If not, it needs SPEAR to be replaced with STAB instead.

[chaosvolt]

Oh wait no, lucerne hammers did at least get the treatment so it's just Magiclysm items.