KeepsakePort_zannc

Porting some Keepsakes over from Hades 1 to Hades 2

Currently Added:
-- Thanatos Keepsake
-- Persephone Keepsake
-- Hermes Keepsake

Current issues:
-- Heavily Untested, maybe values aren't correct for thanatos keepsake etc
// Persephone Rarity not working (wow its fixed thanks man so awesome thanks pony)
// Thanatos Increments in the fields even if hit (....mildly infuriating)
-- Maybe change the keepsake effect for Thanatos
-- Change Clear Timer for Hermes

Planned Keepsakes :
-- Orpheus Keepsake (Game is more range based now)
-- Maybe Sisyphus, bloated boon pool so it might be easier for it to be viable
-- New Keepsakes from New Gods?