[Collection/Video] Horizontal and Subject Sway overlays

[charlieforward9]

Overlay a fixed box on the camera viewport to indicate where the patient should be during the recording.

Rationale Detailed Here: https://github.com/VisualPT/docs/discussions/11#discussioncomment-7129673

• Bounding Box with 12-15 degree tilt
• Horizontal/vertical line

[Timothyrichpt]

Yep, I think this is what we need to get us to a mobile app MVP for validation in New Orleans.

The two camera solution or the 3-D camera solution would be a significant upgrade in both software and hardware that might be an interesting discussion for phase 2, down the road.

[charlieforward9]

@Timothyrichpt @DrBubbles42 I used trig for the first time outside of an academic setting! Heres the box, with a 12-degree angle on the sides.