feat: added reference to NeoVim from prebuilt binaries feature

[marcosbolanos]

What type of PR is this?

• [ x ] Add a new dev container collection
• Update to an existing dev container collection
• Documentation/spec update
• Other containers.dev site update (UX, layout, etc)

Description

Added possibility to install NeoVim from prebuilt binaries directly. Currently, available devcontainer NeoVim features are installed either via :

• apt (2 collections)
• homebrew (1 collection)
• built from source (1 collection)

My implementation offers a clear advantage in that it is extremely lightweight, requires no lengthy installation (just download, unzip, and move a file), offers the latest neovim, and works on almost any linux.

Collection checklist

If your PR contributes a new collection, please utilize this checklist:

• Collection name
• Maintainer name
• Maintainer contact link (i.e. link to a GitHub repo, email)
• Repository URL
• OCI Reference
• I acknowledge that this collection provides new functionality, distinct from the existing collections part of this index.