Refactor oci client

[souleb]

The client in pkg/oci can be refactored to include some optimization:

• use remote instead of crane like in Switch from crane package to remote source-controller#1244
• provide a client that can be used in both source-controller and flux2.
• optimize for large files download/uploads

Tasks:

• optimize for large files download using http key range where possible Enable pulling large files in parallel #738
• switch from crane to remote
• enable OCI client in SC