feat(feature-activation): configure NOP features on mainnet

[glevco]

Depends on #903

Motivation

Configure NOP features for Feature Activation on mainnet, so we can test the process there, according to the Phased Testing plan.

Acceptance Criteria

• Enable Feature Activation usage on mainnet.
• Configure NOP_FEATURE_1 and NOP_FEATURE_2 on mainnet.

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: 3 lines in your changes are missing coverage. Please review.

Comparison is base (eaf76bd) 85.22% compared to head (58f40ab) 85.35%.
Report is 1 commits behind head on master.

Files	Patch %	Lines
hathor/p2p/manager.py	81.25%	1 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #908      +/-   ##
==========================================
+ Coverage   85.22%   85.35%   +0.13%     
==========================================
  Files         285      285              
  Lines       22368    22365       -3     
  Branches     3371     3369       -2     
==========================================
+ Hits        19063    19090      +27     
+ Misses       2631     2607      -24     
+ Partials      674      668       -6     

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[glevco]

@jansegre I've pushed the start of the process 1 more week, so it starts 2 weeks from now, to buy time for the next release and talking to our miner partners.

The base branch was changed.