ACU: acuconfigs.yaml setting for forcing sequential moves

[mhasself]

Description

This supports platforms where one generally doesn't want to move az and el axes simultaneously. When setting "axes_sequential" is enabled in acu-configs.yaml, it will perform all moves as multi-legged, separating az and el. This applies whether Sun Avoidance is on, or not. But special handling is applied, for case of Sun Avoidance.

Motivation and Context

Relates to simonsobs/scheduler#122, simonsobs/scheduler#100.

How Has This Been Tested?

Test case; tested on SATP1 today in sequential and simultaneous modes.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.

[BrianJKoopman]

This looks good, thanks!

I'm going to rebase this before merging as a test of the recent code coverage reporting changes (the fact that you have a test addition here makes this a good test case.) I'll merge once that's done.