Improve Peer Score Algorithm

[blindchaser]

The current peer score algorithm is not working effectively. Introducing a new peer score algorithm:

• Added block sync performance reward: The score increases for every 5 consecutive successful block syncs.
• Introduced time-decaying penalties for connection issues:
  • The penalty for dial failures decreases over time, reducing its impact as time passes since the last failure.
  • The penalty for disconnections decreases based on the time since the last connection, minimizing its impact with prolonged stability.
• Maintained a score cap for non-block peers to ensure fair prioritization.

[yzang2019]

Maybe add another one called NumOfTimeouts?

[blindchaser]

the timeout will trigger the Disconnected() method which has counted to decrease score. the flow is:

timeout detection -> peer.didTimeout = true -> pool.removePeer(id, true) -> peerManager.Disconnected()

[codecov]

Codecov Report

Attention: Patch coverage is 72.00000% with 14 lines in your changes missing coverage. Please review.

Project coverage is 58.18%. Comparing base (eab3712) to head (220ceec).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
internal/p2p/peermanager.go	78.12%	5 Missing and 2 partials ⚠️
internal/state/execution.go	16.66%	4 Missing and 1 partial ⚠️
internal/blocksync/pool.go	33.33%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #248      +/-   ##
==========================================
- Coverage   58.22%   58.18%   -0.05%     
==========================================
  Files         249      249              
  Lines       34512    34549      +37     
==========================================
+ Hits        20094    20101       +7     
- Misses      12827    12856      +29     
- Partials     1591     1592       +1     

Files with missing lines	Coverage Δ
internal/blocksync/reactor.go	51.26% <100.00%> (+0.86%)	⬆️
internal/blocksync/pool.go	78.46% <33.33%> (-0.86%)	⬇️
internal/state/execution.go	61.83% <16.66%> (-0.46%)	⬇️
internal/p2p/peermanager.go	79.39% <78.12%> (+0.06%)	⬆️

... and 19 files with indirect coverage changes