Implement thoughtsense detection mode

[farling42]

A resubmission of PR #15115 since I screwed up my repository.

Implements the thoughtsense detection mode.

It also updates the "Empathic Sense" ancestry feature for the Kashrishi race to use this new sense out to 15 ft.

The new sense will only detect Actor types of: character, npc, familiar.

It is best tested by giving the PC with "Empathic Sense" the "Deaf" condition (otherwise they can hear it).

This can also be applied to the Cauthooj (in Monster Core) - "The cauthooj senses all non-mindless creatures at the listed range."

Note that Rhu-Chalik (in Monster Core) have this as a precise sense. Cauthooj creature wrongly had tremorsense when it should have thoughtsense. Other creatures in Monster Core already have thoughtsense configured on their Actors.

[stwlam]

Same issue as before: we need a decent UI solution, and sound waves of a different color isn't that.

[farling42]

Same issue as before: we need a decent UI solution, and sound waves of a different color isn't that.

Would a simple blur filter suffice?