feat(ai): Add llm.nvim

[Uzaaft]

This PR adds a new section, ai.
Closes #1340

[github-actions]

Review Checklist

Does this PR follow the [Contribution Guidelines](development guidelines)? Following is a partial checklist:

Proper conventional commit scoping:

• If you are adding a new plugin, the scope would be the name of the category it is being added into. ex. feat(utility): added noice.nvim plugin

• If you are modifying a pre-existing plugin or pack, the scope would be the name of the plugin folder. ex. fix(noice-nvim): fix LSP handler error

• Pull request title has the appropriate conventional commit type and scope where the scope is the name of the pre-existing directory in the project as described above

• README is properly formatted and uses fenced in links with <url> unless they are inside a [title](url)

• Entry returns a single plugin spec with the new plugin as the only top level spec (not applicable for recipes or packs).

• Proper usage of opts table rather than setting things up with the config function.

• Proper usage of specs table for all specs that are not dependencies of a given plugin (not applicable for recipes or packs).

[Uzaaft]

This one will require a chad review @mehalter

[mehalter]

LGTM!

[mehalter]

This looks like we should move the other AI plugins to this location as well now that this section is added to neovimcraft

[mehalter]

small typo in readme

[Uzaaft]

This looks like we should move the other AI plugins to this location as well now that this section is added to neovimcraft

Yeah I agreed. I can do a follow up PR.

[Uzaaft]

@mehalter We got an issue.

Huggingface got a plugin with the exact same name. Should we prefix the plugin with the author name?