feat(p2p): add connection limit

[sebastijankuzner]

Summary

Checklist

• Tests (if necessary)
• Ready to be merged

[codecov]

Codecov Report

❌ Patch coverage is 85.71429% with 5 lines in your changes missing coverage. Please review.
✅ Project coverage is 59.31%. Comparing base (1f25401) to head (9bacc82).

Files with missing lines	Patch %	Lines
packages/p2p/source/socket-server/server.ts	16.66%	5 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #1363      +/-   ##
===========================================
+ Coverage    59.04%   59.31%   +0.27%     
===========================================
  Files          967      971       +4     
  Lines        65327    65804     +477     
  Branches      1821     1903      +82     
===========================================
+ Hits         38570    39031     +461     
- Misses       26517    26531      +14     
- Partials       240      242       +2     

Flag	Coverage Δ
contracts	97.74% <ø> (?)
packages	59.05% <85.71%> (+0.01%)	⬆️

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