core: added builder registration to proto

[ciaranmcveigh5]

• added builder registration to proto

category: feature
ticket: #849

[codecov]

Codecov Report

Merging #888 (c690bda) into main (04aa70b) will increase coverage by 0.36%.
The diff coverage is 50.00%.

@@            Coverage Diff             @@
##             main     #888      +/-   ##
==========================================
+ Coverage   54.47%   54.84%   +0.36%     
==========================================
  Files         114      114              
  Lines       12324    12330       +6     
==========================================
+ Hits         6714     6762      +48     
+ Misses       4637     4594      -43     
- Partials      973      974       +1     

Impacted Files	Coverage Δ
core/proto.go	67.28% <50.00%> (-1.03%)	⬇️
core/dutydb/memory.go	70.63% <0.00%> (-1.28%)	⬇️
core/qbft/qbft.go	81.97% <0.00%> (+10.30%)	⬆️

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