[feature request]: export load_workspaces function

[rafcamlet]

Hi! Nice plugin 👍

Could you make load_workspaces function public or add to api something similar like get_workspaces? I started using this as section in https://github.com/sidebar-nvim/sidebar.nvim but I had to replicate that function as there is no way to get list of workspaces. Only print them. :)

[rafcamlet]

Sorry. I'm blind. :) But in my defence it was not mentioned in the readme.

[natecraddock]

No worries! I forgot to add it to the readme. It is in the workspaces.txt doc though :)

[natecraddock]

Added to readme!