feat(code): Add support for FloodSub as an alternative to GossipSub

[romac]

Closes: #XXX

Do not try, not working yet.

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PR author checklist

• Reference GitHub issue
• Ensure PR title follows the conventional commits spec

[codecov]

Codecov Report

Attention: Patch coverage is 58.22222% with 94 lines in your changes missing coverage. Please review.

Project coverage is 82.77%. Comparing base (6cb9578) to head (23dd4c9).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
code/crates/gossip-consensus/src/lib.rs	38.95%	58 Missing ⚠️
code/crates/gossip-consensus/src/channel.rs	60.00%	16 Missing ⚠️
code/crates/gossip-consensus/src/behaviour.rs	80.85%	9 Missing ⚠️
code/crates/gossip-consensus/src/pubsub.rs	75.76%	8 Missing ⚠️
code/crates/actors/src/gossip_consensus.rs	50.00%	2 Missing ⚠️
code/crates/starknet/app/src/spawn.rs	66.67%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #352      +/-   ##
==========================================
- Coverage   83.58%   82.77%   -0.81%     
==========================================
  Files          88       90       +2     
  Lines        6030     6146     +116     
==========================================
+ Hits         5040     5087      +47     
- Misses        990     1059      +69     

Flag	Coverage Δ
integration	83.02% <58.22%> (-0.83%)	⬇️
mbt	22.91% <ø> (ø)

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[romac]

Depends on this PR in libp2p, though we can already merge as-is if we want since we do not intend to publish to crates.io anytime soon.

[cason]

How worst is the performance in this case? I am curious. In particular if we connect all nodes (at libp2p level), which I assume we do.

[romac]

Locally, I don't see any difference. We haven't tested this in QA yet. We probably want to use #354 instead anyway

[romac]

Closing this in favor of #354