Myth/firefly armors

[Setnour6]

Adds glow wood armor.

TO DO:

• Implement textures for the legs/grieves (assigned to slime)

IDEAS:

• Implement Post-Corrupted-Moth armor and provide unique bonuses to firefly items similar to the Ommateum of the Moth item.

[Setnour6]

The legging animation frames and the legging item sprite does not match. Either the legging frame or legging sprite needs to be updated in a future commit. Alternatively, another legging item can be made with the different style