feature: option to enable refactor.nvim's telescope extension about nixvim

[Bodleum]

Would it make sense to do this? You could have something like:

plugins.refactoring = {
    enable = true;
    telescopeExtension.enable = true;
};

but that wouldn't guarantee that plugins.telescope was enabled.
Of course, by enabling the extension from the refactoring side, it could also enable telescope, but I get the feeling that silently enabling other plugins is a bad idea!

Just my thoughts, push back if you disagree!

[GaetanLepage]

Maybe, we should merge the telescope refactor first...

[MattSturgeon]

Maybe, we should merge the telescope refactor first...

Agreed.

It'd be great if that pr added public access to plugins.telescope.enabledExtensions too, for any other telescope extensions we don't support.

Would it make sense to do this? You could have something like: plugins.refactoring.telescopeExtension.enable

Looks fine to me. Is this how other telescope plugins (not included in telescope itself) are handled?