Merge pull request ipfs/boxoipfs/interface-go-ipfs-core#5339 from ipfs/refactor/coreapi/key

key cmd: Refactor to use coreapi This commit was moved from ipfs/interface-go-ipfs-core@f6916c4970b21a5e2f3588e9d13d8645b972944f This commit was moved from ipfs/boxo@d3975b8380be8212637fff66a70cbe95e3e063ea