templates: add gemini, claude, codex

[AkihiroSuda]

lima/website/content/en/docs/config/ai/inside/_index.md

Lines 6 to 9 in e827aa4

	Lima is useful for running AI agents (e.g., Codex, Claude, Gemini) so as to prevent them
	from directly reading, writing, or executing the host files.
	Lima v2.0 is planned to be released with built-in templates for well-known AI agents.

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Previous discussion:

Still not sure whether we should have VM templates such as template://claude, as we have never included proprietary software in our template set.
Maybe acceptable as template://nonfree/claude ?

I do not think there is any reason not to include example templates for proprietary applications, and I don't think we need "nonfree" in the template name either. I would be fine with something like template://app/claude to indicate this is not a distro, but a specific app.

Just like you can install nonfree software with Homebrew, e.g. brew install docker-desktop or brew install multipass.

Pointing out "nonfree" components seems to be more important to GPL licensed projects.

Originally posted by @jandubois in #3712