Merge pull request ipfs/boxoipfs/interface-go-ipfs-core#65 from ipfs/petar/namefmt

Add ID formatting functions, used by various IPFS cli commands This commit was moved from ipfs/interface-go-ipfs-core@b935dfe5375eac7ea3c65b14b3f9a0242861d0b3 This commit was moved from ipfs/boxo@d15ee994ab88e8cd9ab570ae725e2065f78c9516