test: Network debug

[ancazamfir]

Closes: #XXX

This PR is temporary to help us testing quickly with different combinations of libp2p options (e.g. enable_peer_scoring, enable_explicit_peering, enable_flood_publish, persistent_peers_only) on different setups.

To test on consensus repository you can use these helpers:

Script to quickly init, start, stop, restart nodes here

• App used informalsystems-malachitebft-example-channel.

• Has the env flags:

    export MALACHITE__CONSENSUS__P2P__PROTOCOL__ENABLE_PEER_SCORING="true"
    export MALACHITE__CONSENSUS__P2P__PROTOCOL__ENABLE_FLOOD_PUBLISH="false"
    # Note: settingenable_explicit_peering to true should be done per-node in config files
    # Validators: true, Full nodes: false
    # This is because typically validators don't include full nodes in their persistent peers
    # and we want validators to use the mesh to full nodes. Also full nodes need to mesh with validators.
    # If you want to disable explicit peering, set this to false
    #export MALACHITE__CONSENSUS__P2P__PROTOCOL__ENABLE_EXPLICIT_PEERING="false"
    
    # Create 0-mesh
    export MALACHITE__CONSENSUS__P2P__PROTOCOL__MESH_N=0
    export MALACHITE__CONSENSUS__P2P__PROTOCOL__MESH_N_HIGH=0
    export MALACHITE__CONSENSUS__P2P__PROTOCOL__MESH_N_LOW=0
    export MALACHITE__CONSENSUS__P2P__PROTOCOL__MESH_OUTBOUND_MIN=0

• The config flags and current defaults:

[consensus.p2p.protocol]
type = "gossipsub"
mesh_n = 6
mesh_n_high = 12
mesh_n_low = 4
mesh_outbound_min = 2
enable_peer_scoring = true
enable_explicit_peering = false
enable_flood_publish = true

• If enable_explicit_peering = true then enable_flood_publish setting is ignored
• As noted above, the global flag for enable_explicit_peering should only be used for disabing it, to enable it makes more sense to do it in the config as validators and full nodes are requiring different settings

Script to help network checks here

TODO:

• create mesh with degree 0
• rebase to persistent_peers_only https://github.com/circlefin/circle-chain-consensus/pull/54 or sync with main if that is merged. I think this is done
• add prometheus, addapt check_mesh.py (or even better .rs)

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