Add handling of map enchantments in "Hide Maps Below Tier"

[Apollys]

Users may want to retain visibility of maps with certain enchantments (for example, layers of delirium), while still hiding the remaining maps below a given tier.

A first-pass implementation could be to add a UI checkbox "Except maps with enchantment".

More advanced implementations could consider how to allow finer granularity control without increasing UI complexity too much.