Persist results in s3

[ayazhafiz]

Implements persistence of results to a remote persistence task.

Results are only persisted to a remote when

• there are no pending results-persistence tasks left in the queue
• the initial manifest is already complete

This is to avoid starvation by way of continuously persisting to the remote.

[github-actions]

✅ Bigtest for 869552f (run)

Benchmarks:

• RSpec: 6.94% overhead
  • RSpec time: 17.72 seconds
  • ABQ time: 18.95 seconds
• RSpec parallel, 10 runs: max 16.99% overhead
  • min 7.11% overhead
  • standard deviation: 2.93%
• Jest: 4.18% overhead
  • Jest time: 20.172 seconds
  • ABQ time: 21.016 seconds

Fuzz result sizes:

• PASSED

[github-actions]

✅ Bigtest for f83a3ce (run)

Benchmarks:

• RSpec: 9.84% overhead
  • RSpec time: 17.79 seconds
  • ABQ time: 19.54 seconds
• RSpec parallel, 10 runs: max 15.35% overhead
  • min 6.63% overhead
  • standard deviation: 2.85%
• Jest: 5.11% overhead
  • Jest time: 20.442 seconds
  • ABQ time: 21.486 seconds

Fuzz result sizes:

• PASSED

[kylekthompson]

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