feat: forest-cli net info

[hanabi1224]

Summary of changes

As part of #3218

Changes introduced in this pull request:

• Add forest-cli net info command that prints libp2p stats directly from Swarm::network_info API

Sample output:

forest libp2p swarm info:
num peers: 47
num connections: 59
num pending: 3
num pending incoming: 0
num pending outgoing: 3
num established: 56

Reference issue to close (if applicable)

Closes

Other information and links

Change checklist

• I have performed a self-review of my own code,
• I have made corresponding changes to the documentation,
• I have added tests that prove my fix is effective or that my feature works (if possible),
• I have made sure the CHANGELOG is up-to-date. All user-facing changes should be reflected in this document.

[LesnyRumcajs]

Perhaps we could implement Display for the NetInfoResult?

[hanabi1224]

I thought about it but not sure if it's good practice to implement a multi-line Display message, formatting a multi-line message with print macro could end up with messy result

[LesnyRumcajs]

I'm good with either approach.

[LesnyRumcajs]

why? what does it have to do with this subcommand?

[hanabi1224]

I was using this to cross-check the correctness of the metrics, it's part of #3218 and I can convert it into a separate PR if you like.

[LesnyRumcajs]

Let's do it in a separate PR and comment on it some more, then.

[hanabi1224]

Removed