Add sanity checks for stake accumulator state integrity

[kostko]

No description provided.

[codecov]

Codecov Report

Merging #2665 into master will increase coverage by 0.07%.
The diff coverage is 55.2%.

@@            Coverage Diff             @@
##           master    #2665      +/-   ##
==========================================
+ Coverage   62.96%   63.04%   +0.07%     
==========================================
  Files         365      365              
  Lines       34504    34570      +66     
==========================================
+ Hits        21727    21795      +68     
+ Misses      10074    10066       -8     
- Partials     2703     2709       +6

Impacted Files	Coverage Δ
go/staking/api/sanity_check.go	51.85% <0%> (-0.98%)	⬇️
go/consensus/tendermint/apps/registry/registry.go	64.81% <0%> (ø)	⬆️
...nt/apps/supplementarysanity/supplementarysanity.go	78.26% <100%> (+0.31%)	⬆️
go/consensus/tendermint/apps/staking/genesis.go	38.94% <16.66%> (-0.73%)	⬇️
...nsus/tendermint/apps/supplementarysanity/checks.go	48.79% <45.61%> (-1.67%)	⬇️
...consensus/tendermint/apps/registry/transactions.go	48.76% <66.66%> (-1.5%)	⬇️
go/registry/api/api.go	38.76% <91.3%> (+1.98%)	⬆️
go/runtime/committee/nodes.go	80.64% <0%> (-4.31%)	⬇️
go/roothash/tests/tester.go	95.54% <0%> (-0.64%)	⬇️
go/worker/compute/merge/committee/node.go	76.25% <0%> (-0.25%)	⬇️
... and 10 more

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