feat(reactor): add IReactorProcess and IReactorSocket support [part 3/11]

[glevco]

Depends on #1174

Motivation

For the P2P Multiprocess project, we'll need our Twisted reactor to define support for IReactorProcess and IReactorSocket. This PR does this, and also reorganizes our existing simulator and test reactor classes, unifying them for simplicity.

Acceptance Criteria

• Add Twisted's IReactorProcess and IReactorSocket to our ReactorProtocol.
• Unify our simulator and test MemoryReactor and MemoryReactorClock definitions, adding support for IReactorProcess.
• No changes in behavior.

Checklist

• If you are requesting a merge into master, confirm this code is production-ready and can be included in future releases as soon as it gets merged

[codecov]

Codecov Report

Attention: Patch coverage is 90.24390% with 4 lines in your changes missing coverage. Please review.

Project coverage is 84.84%. Comparing base (eee9bb0) to head (72330e8).

Files with missing lines	Patch %	Lines
hathor/reactor/reactor_socket_protocol.py	76.92%	3 Missing ⚠️
hathor/reactor/reactor_process_protocol.py	87.50%	1 Missing ⚠️

Additional details and impacted files

@@                        Coverage Diff                        @@
##           refactor/p2p/peer-connections    #1163      +/-   ##
=================================================================
+ Coverage                          84.81%   84.84%   +0.02%     
=================================================================
  Files                                315      318       +3     
  Lines                              24392    24427      +35     
  Branches                            3700     3702       +2     
=================================================================
+ Hits                               20689    20726      +37     
+ Misses                              2997     2993       -4     
- Partials                             706      708       +2     

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[github-actions]

Bencher Report

Branch	feat/reactor-process-socket
Testbed	ubuntu-22.04

Click to view all benchmark results

Benchmark	Latency	Benchmark Result nanoseconds (ns) (Result Δ%)	Lower Boundary nanoseconds (ns) (Limit %)	Upper Boundary nanoseconds (ns) (Limit %)
sync-v2 (up to 20000 blocks)	📈 view plot 🚷 view threshold	101,458,552,133.78 (-0.34%)	91,620,330,173.56 (90.30%)	111,980,403,545.46 (90.60%)

🐰 View full continuous benchmarking report in Bencher