refactor(p2p): remove HathorManager and P2PManager dependencies [part 7/11]

[glevco]

Depends on #1152

Motivation

Continuing with the multiprocess P2P refactors, this PR introduces the P2PManagerProtocol to abstract the existing ConnectionsManager. This will make it easier to perform IPC calls from individual connections (HathorProtocol instances) to the connections manager. It also removes the HathorManager dependency from HathorProtocol.

Acceptance Criteria

• Implement P2PManagerProtocol.
• Remove origin parameter from on_receive_peer (it's not used).
• Remove ConnectionsManager from NetfilterContext and NetfilterFactory (it's not used).
• Remove HathorManager from HathorProtocol.
• Change HathorProtocol to receive a P2PManagerProtocol instead of a ConnectionsManager.
• 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 65.30612% with 17 lines in your changes missing coverage. Please review.

Project coverage is 84.72%. Comparing base (1fff2ad) to head (bf1e568).

Files with missing lines	Patch %	Lines
hathor/p2p/dependencies/protocols.py	27.77%	0 Missing and 13 partials ⚠️
hathor/p2p/states/peer_id.py	25.00%	2 Missing and 1 partial ⚠️
hathor/p2p/states/ready.py	80.00%	1 Missing ⚠️

Additional details and impacted files

@@                      Coverage Diff                      @@
##           refactor/p2p/dependencies    #1142      +/-   ##
=============================================================
- Coverage                      84.85%   84.72%   -0.13%     
=============================================================
  Files                            320      320              
  Lines                          24462    24457       -5     
  Branches                        3709     3718       +9     
=============================================================
- Hits                           20757    20721      -36     
- Misses                          2990     3004      +14     
- Partials                         715      732      +17     

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