Add duration to snapshot compute-state json output

[elmattic]

Summary of changes

Changes introduced in this pull request:

• Add timing for each message and gas charge in the JSON output

Timings are expressed in nanoseconds. You should see results of the same magnitude as Lotus, for example, when the following commands are used:

lotus state compute-state --json --vm-height <height>
forest-tool snapshot compute-state --epoch <height> --json <snapshot>

Only fvm4 is supported at the moment because of #3524.

Sample output

forest-tool snapshot compute-state --epoch 1131010 --json forest_snapshot_calibnet_2023-11-29_height_1131010.forest.car.zst | jq > compute-state.log

compute-state.log

Reference issue to close (if applicable)

Closes

Other information and links

Change checklist

• I have performed a self-review of my own code,
• I have made corresponding changes to the documentation,
• I have added tests that prove my fix is effective or that my feature works (if possible),
• I have made sure the CHANGELOG is up-to-date. All user-facing changes should be reflected in this document.

[LesnyRumcajs]

Could you please add a sample output?

[elmattic]

Could you please add a sample output?

Done.

[lemmih]

@elmattic Could you add a changelog entry for this?