refactor(p2p): implement P2PDependencies class [part 6/11]

[glevco]

Depends on #1165

Motivation

The goal of this PR is to isolate the sync so all its dependencies to the rest of the full node are in a single class, P2PDependencies. This means that every method that the sync called in the storage, in indexes, in the vertex handler, etc, are moved to this new class.

Then, this class will serve as a proxy between the sync and the node. When the sync is moved to a subprocess, this class will serve as an interface to perform IPC or any other form of communication, and everything will be transparent to existing sync classes.

Acceptance Criteria

• Create P2PDependencies class and respective protocols to abstract each dependency.
• Change all P2P-related classes so they receive a P2PDependencies instance instead of individual dependencies.
• Move capabilities from HathorManager to P2PDependencies.
• Move whitelist_only from ConnnectionsManager to P2PDependencies.
• The sync process does not set a tx_storage in vertices anymore.
• 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 90.47619% with 18 lines in your changes missing coverage. Please review.

Project coverage is 84.85%. Comparing base (97652fe) to head (1fff2ad).

Files with missing lines	Patch %	Lines
hathor/p2p/dependencies/protocols.py	36.84%	0 Missing and 12 partials ⚠️
hathor/p2p/states/peer_id.py	60.00%	1 Missing and 1 partial ⚠️
hathor/p2p/sync_v1/agent.py	93.10%	0 Missing and 2 partials ⚠️
hathor/p2p/states/hello.py	80.00%	0 Missing and 1 partial ⚠️
hathor/p2p/sync_v2/agent.py	96.66%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@                        Coverage Diff                         @@
##           refactor/p2p/pre-ipc-refactors    #1152      +/-   ##
==================================================================
+ Coverage                           84.82%   84.85%   +0.03%     
==================================================================
  Files                                 317      320       +3     
  Lines                               24444    24462      +18     
  Branches                             3698     3709      +11     
==================================================================
+ Hits                                20734    20757      +23     
+ Misses                               3003     2990      -13     
- Partials                              707      715       +8     

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