Add funcionality for config editing

[ivyleavedtoadflax]

It would be great to have some functionality to support the editing of the config JSONs.

[nsorros]

Is that similar to #8 ? Could you expand on the feature?

[ivyleavedtoadflax]

Yes similar to #8, but also we don't actually check anywhere that the config json is valid, so what i want it to do is:

1. Verify that the json is valid (being invalid was actually the cause of Intermittent issue reading jsons #40)
2. Allow what you describe in Add config for hf token or ask user #8 so that you can just modify the config on the CLI without needing to edit a file manually.
   Some progress on this in Add hugie config modify sub-command (resolves #41) #47

[nsorros]

This is exciting, keep going 👍