Add succubus loyalty system

A real loyalty system for succubi should be implemented in order to make player's interactions with them richer. Obtaining loyalty should be costly and not trivial like it is in slave maker.

Increase * High quality rooms * Gifts? * Certain tasks like being given free reign to hunt (but this should cause problems for the player)

Decrease * Boredom from repetitious tasks * Poor quality rooms (gets worst as the player gets richer)