Add block final state commitment

[m4ksio]

Ported from v0.21

[codecov-commenter]

Codecov Report

Merging #1239 (6e20295) into master (cbf525a) will decrease coverage by 0.01%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #1239      +/-   ##
==========================================
- Coverage   56.24%   56.22%   -0.02%     
==========================================
  Files         495      495              
  Lines       30124    30125       +1     
==========================================
- Hits        16942    16938       -4     
- Misses      10883    10887       +4     
- Partials     2299     2300       +1     

Flag	Coverage Δ
unittests	56.22% <100.00%> (-0.02%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...e/execution/computation/computer/uploader/model.go	64.70% <100.00%> (+2.20%)	⬆️
...ngine/common/synchronization/finalized_snapshot.go	68.75% <0.00%> (-4.17%)	⬇️
...sus/approvals/assignment_collector_statemachine.go	45.19% <0.00%> (-1.93%)	⬇️
cmd/util/ledger/migrations/storage_v4.go	41.56% <0.00%> (-0.61%)	⬇️

---

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 cbf525a...6e20295. Read the comment docs.

[huitseeker]

LGTM, thanks for the port (original in #1235)

[synzhu]

Thanks :)

[m4ksio]

bors merge

[bors]

Build succeeded:

• Integration Tests (1.15)
• Integration Tests (1.16)
• Lint
• Unit Tests (1.15)
• Unit Tests (1.16)