per entity signature count tool

[ptrus]

Implements a cli tool to query per entity signature counts.

Could potentially extract this into it's own repo.

[codecov]

Codecov Report

Merging #2500 into master will increase coverage by 0.14%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master    #2500      +/-   ##
==========================================
+ Coverage   67.09%   67.23%   +0.14%     
==========================================
  Files         324      324              
  Lines       29893    29894       +1     
==========================================
+ Hits        20056    20100      +44     
+ Misses       7357     7320      -37     
+ Partials     2480     2474       -6

Impacted Files	Coverage Δ
go/consensus/api/api.go	50% <ø> (ø)	⬆️
go/consensus/tendermint/api/api.go	73.58% <100%> (+0.5%)	⬆️
go/roothash/api/commitment/pool.go	69.02% <0%> (-1.48%)	⬇️
go/worker/storage/committee/node.go	77.65% <0%> (-0.28%)	⬇️
go/worker/merge/committee/node.go	75.12% <0%> (+0.48%)	⬆️
go/consensus/tendermint/tendermint.go	64.94% <0%> (+0.71%)	⬆️
go/runtime/transaction/transaction.go	78.04% <0%> (+1.21%)	⬆️
go/worker/compute/committee/node.go	67.85% <0%> (+1.26%)	⬆️
go/storage/client/client.go	71.37% <0%> (+1.44%)	⬆️
go/worker/common/committee/group.go	82.52% <0%> (+1.48%)	⬆️
... and 3 more

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[kostko]

Nice, did a quick review.

Maybe also add a readme into go/extra to describe what is in there.

[kostko]

Could potentially extract this into it's own repo.

I think it is useful having this here for now.

[ravenac95]

This looks good to me! My approval is meaningless here tho :).