Bounding boxes are half the size they are supported to be

[jleibs]

Documentation clearly indicates bounding box dimensions are specified in half-sizes:
https://ref.rerun.io/docs/python/v0.3.0/common/spatial_primitives/#rerun.log_obb

Sample code:

rr.log_obb("world/obb", [1, 2, 3], [0, 0, 0], None, color=[255, 0, 0])

expected_corners = [[d0, d1, d2] for d0 in (-1, 1) for d1 in (-2, 2) for d2 in (-3, 3)]
rr.log_points("world/corners", positions=expected_corners, colors=[0, 255, 0])

However, the resultant bounding box appears to have sides of the provided dimensions:

[nikolausWest]

Does #1749 close this or do we also need to make updates to examples or elsewhere?

[emilk]

Make sure we update all example and docs too