Improve developer experience with workspaces-related tooling

[galargh]

See also discussion: https://discord.com/channels/899652135552167957/940620444564848720/959054401652260884 and feature: https://go.dev/ref/mod#workspaces

It looks like we have pains that come from not working with a monorepo setup. For example: ipfs/go-ipfs-config#151, and the existence of https://github.com/libp2p/workspace-go-libp2p.

Is there a need to improve tools & generalize workspaces?

(could git subtrees be a good alternative?)

The end goal would be to match the simplicity of working in a monorepo setup.

Things we can do now:

Automate the maintenance of workspace-go-libp2p

Document and make sure every maintainer knows about workspace-go-libp2p

create workspace go ipfs

create workspace js ipfs, js libp2p, rust ipfs, rust libp2p, etc.

Add pre-commit hook in unified CI / default configuration for go repos

Things that would help:

Reach out to people maintaining and using workspace-go-libp2p and ask for details

Things we can do later:

Crazy idea: expose the whole stack as a single monorepo

[galargh]

With recent product announcement in Codespaces we should definitely revisit this!