Enhancement: New method to add files from list of paths

[Charles Frankum]

Proposal Summary

I'd like a new method to be added to Dataset so that we can add files to via a list of paths (as opposed to a directory or single path).

Motivation

With the structure of our data and the current implementation of add_files we are forced to either use symlinks to create a new directory of paths or call _add_files for each path we have. Both of these implementations are not performant so it would be useful if we could instead simply pass a list of paths to add to the dataset.

Related Discussion

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