Caching information clarified to the user

[tdejager]

Currently there are multiple caches:

• Metadata cache (do I need to retrieve the metadata again?)
• Rebuild cache (do I need to rebuild the package and .conda)
• Work directory(inside the pixi env where the source is built)
• Built/Packages cache (contains the extracted packages)

Would be good to be able to view where these caches are and be able to interact with them, e.g clearing.

[tdejager]

Might need to expand scope of this issue, to also include renaming and how to work together with pixi clean CLI.