Add a CLI command for converting entities' ids to their staking account addresses

[tjanez]

Closes #3003.

[codecov]

Codecov Report

Merging #3009 into master will increase coverage by 0.02%.
The diff coverage is 44.44%.

@@            Coverage Diff             @@
##           master    #3009      +/-   ##
==========================================
+ Coverage   68.43%   68.45%   +0.02%     
==========================================
  Files         367      367              
  Lines       36073    36091      +18     
==========================================
+ Hits        24685    24706      +21     
+ Misses       8233     8228       -5     
- Partials     3155     3157       +2     

Impacted Files	Coverage Δ
go/oasis-node/cmd/stake/stake.go	69.23% <44.44%> (-3.57%)	⬇️
go/oasis-node/cmd/common/metrics/disk.go	65.51% <0.00%> (-20.69%)	⬇️
go/oasis-node/cmd/common/metrics/resource.go	84.00% <0.00%> (-8.00%)	⬇️
...ompute/txnscheduler/algorithm/batching/batching.go	78.66% <0.00%> (-6.67%)	⬇️
...ensus/tendermint/apps/staking/proposing_rewards.go	82.85% <0.00%> (-5.72%)	⬇️
go/common/cbor/codec.go	78.37% <0.00%> (-5.41%)	⬇️
...n/crypto/signature/signers/memory/memory_signer.go	71.42% <0.00%> (-4.77%)	⬇️
go/worker/common/p2p/p2p.go	61.71% <0.00%> (-4.51%)	⬇️
.../consensus/tendermint/apps/epochtime_mock/state.go	78.72% <0.00%> (-4.26%)	⬇️
go/worker/keymanager/handler.go	67.92% <0.00%> (-3.78%)	⬇️
... and 25 more

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[kostko]

Add E2E test to the stake_cli scenario, otherwise looks good!

[tjanez]

Add E2E test to the stake_cli scenario, otherwise looks good!

Done. Please, take another look.

[kostko]

Nice!