go/control/status: Add fields for quick overview of node status

[ptrus]

TODO:

• not sure if current runtime worker statuses make sense, maybe some should be added as well (e.g. runtime suspended)

[Yawning]

D: https://github.com/oasisprotocol/oasis-sdk/blob/main/cli/cmd/inspect/node_status.go

Oh nevermind you just altered the datastructure, so I don't need to change the command.

[kostko]

Looks good, just some minor nits.

[codecov]

Codecov Report

Merging #4669 (f7407a3) into master (95df7f0) will decrease coverage by 0.87%.
The diff coverage is 35.83%.

@@            Coverage Diff             @@
##           master    #4669      +/-   ##
==========================================
- Coverage   67.66%   66.79%   -0.88%     
==========================================
  Files         432      433       +1     
  Lines       48666    48786     +120     
==========================================
- Hits        32930    32585     -345     
- Misses      11730    12170     +440     
- Partials     4006     4031      +25     

Impacted Files	Coverage Δ
go/consensus/tendermint/seed/seed.go	44.67% <0.00%> (-0.23%)	⬇️
go/worker/common/api/api.go	19.67% <19.67%> (ø)
go/consensus/api/api.go	41.17% <48.00%> (+18.95%)	⬆️
go/worker/common/committee/node.go	59.18% <53.84%> (-0.36%)	⬇️
go/consensus/tendermint/full/full.go	62.97% <71.42%> (-1.30%)	⬇️
...nsensus/tendermint/apps/keymanager/transactions.go	0.00% <0.00%> (-55.56%)	⬇️
go/ias/http/http.go	20.33% <0.00%> (-44.07%)	⬇️
go/runtime/host/sandbox/sandbox.go	59.85% <0.00%> (-16.20%)	⬇️
go/keymanager/api/policy_sgx.go	33.33% <0.00%> (-13.34%)	⬇️
go/worker/storage/committee/utils.go	92.30% <0.00%> (-7.70%)	⬇️
... and 49 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 95df7f0...f7407a3. Read the comment docs.