[BUG] AtomList Pretty Printing edge case failure

[johnzl-777]

Describe the bug
In the terminal, the pretty printing for AtomList assumes that the coordinates always have two elements (x and y). However this isn't always the case as in the examples below:

To Reproduce

atoms = AtomList([(0,), (1,), (2,)])

or

atoms = generate_sites(ChainLattice(), 9, scale = 5.72)

Expected behavior
Should show a scatterplot from UnicodePlots

Version Info

• Julia version: 1.8.2
• Package Version: 0.2.1

Additional context
Add any other context about the problem here.