Update collection-index.yml

[thediveo]

add devcontainer feature collection by TheDiveO

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)

Related Issues

• Related Issue #
• Closes #

Description

add devcontainer feature collection by TheDiveO

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]

Thanks for the PR
Please resolve conflicts

[thediveo]

hopefully we don't need to do this multiple times with other PRs getting merged first, sending me back into merge conflicts.

[ddoyle2017]

🚀