Latex Styled Callouts

Changes callouts to look more like latex definitions/theorems. Simply enable the plugin, and callouts will now look and work differently. The {} in > [!{}] example is interpretted differently. Icons are removed, and instead the {} is titlized, with -'s replaced with spaces, and the contents of () brackets being italicized. e.g.

> [!definition-(auxiliary-category)]- Whatever your longer title is

becomes

Definitions (Auxiliary Category). Whatever your longer title is.

The contents are then indented.