Feature: Implement right to left language display

[caaster]

Problem being solved

Certain languages such as Arabic must display in their native reading state which is right to left. Both Stanford and Harvard have implemented this and it needs to be added to Spotlight core.

Feature details

See: https://dlmenetwork.org/ar/library/home (Stanford) See: https://curiosity.lib.harvard.edu/coptica-at-harvard (Harvard)

Acceptance criteria

[corylown]

Is this a duplicate of https://github.com/projectblacklight/spotlight/issues/3506 ?

[hackartisan]

We've had luck recently with dir="auto" https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Global_attributes/dir https://github.com/pulibrary/dpul-collections/pull/576/files

@corylown #3506 appears to be about layout, where as this one looks like it's specifically about dir. It might make sense to combine them or work them together? But I don't think they're strictly duplicate.

[corylown]

I think it probably makes sense to treat these as one issue with multiple requirements.