3D world space glyph click handling

These changes modify the glyph click detection from using relative Rect coordinates to world-space Bounds, in order to support arbitrary rotation of the TypogenicText object in 3D space while still properly detecting click events on glyphs.

Also includes the ability to enable/disable click support, option to support click detection on moving/rotating objects, and the option to display Gizmos for each glyph's click detection bounds.