Add basic support for Dread Captain's Cutlass

[vaisest]

Description of the problem being solved:

Since #10109 was merged, this is much easier to add support for. I've added the rare-like unique definition here and also added the trigger skill definition (which is hopefully correct).

I did NOT add support for the "melee strikes curse enemies..." line since support for this didn't seem to exist, and I'm not familiar enough with how triggers work.

Steps taken to verify a working solution:

• Trigger doesn't apply to spells
• Crafting from DB works
• Mod options include both 1H sword mods and unique mods the weapon has
• In-game item works

Todo: custom modifiers (you can influenced exalt this and so on)

Link to a build that showcases this PR:

https://poe.ninja/poe1/builds/allflame?items=Dread+Captain%27s+Cutlass

Item Class: One Hand Swords
Rarity: Unique
Dread Captain's Cutlass
Ghostflame Blade
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One Handed Sword
Physical Damage: 21-82
Critical Strike Chance: 7.34% (augmented)
Attacks per Second: 1.96 (augmented)
Weapon Range: 1.1 metres
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Requirements:
Level: 68
Str: 113
Dex: 113
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Sockets: W-W 
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Item Level: 81
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{ Implicit Modifier }
Can be Allflame Crafted as if Rare
Cannot gain Intangibility
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{ Prefix Modifier "Combatant's" (Tier: 2) — Attack, Gem }
+1 to Level of Socketed Melee Gems
{ Prefix Modifier "Paragon's" (Tier: 1) — Gem }
+1 to Level of Socketed Gems
{ Suffix Modifier "of Celebration" (Tier: 1) — Attack, Speed }
26(26-27)% increased Attack Speed
{ Suffix Modifier "of Needling" (Tier: 6) — Attack, Critical }
13(10-14)% increased Critical Strike Chance
{ Suffix Modifier "of Conquest" (Tier: 3) — Life }
Gain 42(35-44) Life per Enemy Killed
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"Dread Captain's a title, boy. Taken, not earned.
From Brinehook Vex on down to the Piratebane
himself. Beware. That cutlass has no allegiance."
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Note: ~b/o 5 chaos

Before screenshot:

After screenshot:

[vaisest]

This appeared on export. Not sure what it is from

[vaisest]

https://www.poewiki.net/wiki/Captainsbane