feat: upgrade from go-block-format to go-libipfs/blocks

[hacdias]

go-block-format is now deprecated: ipfs/go-block-format#37

It seems like other dependencies have to be updated in order for this to work and they will also be incorporated into go-libipfs. I will update this PR once that is the case.

[Jorropo]

@hacdias you just need to go get github.com/ipfs/go-block-format@latest, that required to make librairies like go-ipfs-blockstore use stubbed go-block-format.

[Jorropo]

LGTM

[willscott]

tests still seem unhappy

[Jorropo]

tests still seem unhappy

Yeah there is two go.mod files and there were a typo in one of the files. Fixed it.

Edit: no more things to fix :'(

[willscott]

3 even, right? (v1, v2, and cmd)

[Jorropo]

3 even, right? (v1, v2, and cmd)

Right, cmd use an outdated version of go-car from go modules tho.

[hacdias]

@Jorropo in a perfect world, we would also have updated https://github.com/ipfs/go-merkledag which go-car depends on, but this is also fine.

[Jorropo]

@hacdias in a perfect world go-merkledag and go-car would have been migrated to go-libipfs 🙃

Using stubs is fine, open a PR on https://github.com/ipfs/go-merkledag if you want to update it.
Also the main blocker here is go-blockstore.

[BigLep]

For the record, per conversation in ipfs/boxo#218, it is acknowledged by PL EngRes IPFS Stewards that it was wrong a mistake to merge this PR without having maintainer approval (e.g., someone from Bedrock). Apologies to those impacted and for the trust that was tarnished. It is going to get reverted shortly by @Jorropo .