- Large refactor of ClickHandler to use custom ray casting code, instead of a Box

- 2 debug methods added, to visualize click area and rays
- Now supports detection of TOP, LEFT, and RIGHT side clicks, based on where the user clicks in the chat bubble (for more UI options in the future)
- TODO: Still need to adjust the yaw and pitch of our 4 corners, so more extreme angles line up better with our detection.