chore: add atomys collection

[42atomys]

What type of PR is this?

• 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

I currently start to update and create a collection of features missing on the index like dragonfly, meilisearch and more. So I add it to the index for everyone :)

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.

[Kaniska244]

Thanks for the PR!
Change approved This can be merged.

[eljog]

PR looks good.
Could you please resolve the conflicts @42atomys ?

[42atomys]

@eljog Thanks for pining me, all is good ✅