`ipfs update`: add built-in command, sunset `ipfs-update`

[lidel]

https://github.com/ipfs/ipfs-update#readme is deprecated, but some users may still depend on it:

• add ipfs update command to kubo
• release final ipfs-update that datects repo version >16 and just calls ipfs update instead
• archive https://github.com/ipfs/ipfs-update and update all docs ipfs-update → ipfs update

[hsanjuan]

Triage:

• Should we pull from dist.ipfs.io or github artifacts? Probably try github first