Finish implementation of an updated Marker vs. Gate Detection System

[Byrdman32]

Finish implementing the new marker/gate search system. Instead of telling Autonomy that we are going to a marker or we are going to a gate. Just give it the points and let it figure it out from there.

2023 Rules define the last for legs as:
1.e.v.

3 posts and a gate, will have GNSS coordinates that are within the vicinity of the posts
(increasing in range from 5-20 m, approximately). For single posts, stopping/landing
within 2 m of the post will be considered successful. For the gates, two posts will be
placed 2 m apart. Rovers/drones must fully pass between both posts to be considered
successful, and drones may be up to 2m from the ground.

1.e.vi.

The posts and gate will have 3-sided visual markers with 20 x 20 cm faces, 0.5 – 1.5m
off the ground. Each marker will display a black and white ARUCO tag using the
4x4_50 tag library as shown below. Each tag will have a white border 1 cell in width,
so cells are 2.5 cm across. The same tag will be displayed on each of the 3 sides so that
it is visible from any direction.