Add Evit15's Assorted Features to collection index

[Evit15]

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)

Collection checklist

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

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