Adds the mentalist class.

Mentalists are psionics that specialize in manipulating the mind of their foes.
They can mostly deal short range damage, but they are highly resistant and resilient to effects. More they are very effective at applying debuffs to their foes and have mastered the use of mind control, psychoanalysis, mass manipulation, propaganda, hypnosis, ventriloquy and even gold to create confusion, weakness, demoralization, betrayal and subversion among their foes.
They wear mindstars that they handle directly with their mind.