Add support for Vulnerability" ignore x Armour" mod

[majochem]

Fixes # .

Description of the problem being solved:

• Adds support for Invulnerability's "Hits against Cursed Enemies ignore X Armour"
• Adds "Armour" / "IgnoreArmour" to physical damage effective DPS breakdown in Calcs
• Notes:
  • This purposely does not modify the "Armour" mods/values directly to avoid conflict with Armour Break mechanics
  • This doesn't currently affect the "Impale" dmg calculation. As Impale is not currently part of PoE2, I did not touch that area
  • This currently only affects offence calculation. If we ever want to calculate the effect of Vulnerability on the player, it will need updates

Steps taken to verify a working solution

• Mod gets parsed correctly
• Affects effective DPS correctly
  • Does not cause negative Armour
  • Has no effect if enemy Armour is 0
  • Scales correctly with curse effect
• Gets displayed correctly in breakdown

Link to a build that showcases this PR:

TestBuild

Before screenshot:

None

After screenshot:

Vulnerability Skill Gem

Phys effective DPS Breakdown