Add 3.25 ring base types

[Xeverous]

Pricechecking reintroduced ring bases from Kalandra league gives parsing errors:

The bases are:

• Dusk Ring

• Penumbra Ring

• Gloam Ring

• Tenebrous Ring

• Shadowed Ring

Example item:

Item Class: Rings
Rarity: Rare
Vengeance Spiral
Shadowed Ring
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Requirements:
Level: 63
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Item Level: 83
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Left ring slot: 25% of Lightning Damage from Hits taken as Cold Damage (implicit)
Right ring slot: 25% of Cold Damage from Hits taken as Lightning Damage (implicit)
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-36 to Dexterity
Adds 2 to 50 Lightning Damage to Attacks against you
25% increased Global Accuracy Rating
142% increased Mana Regeneration Rate
11% increased Light Radius
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Mirrored