refactor: introduce new Output with OutputMeta

[shuiyisong]

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Refer to a related PR or issue link (optional)

closes #3457

What's changed and what's your intention?

This pr refactors Output, turning the old one into OutputData and adding new OutputMeta. Since it's widely used across the project, we try to minimize the change by focusing on only changing the struct. Related feature addition will be made in a separate pr.

Checklist

• I have written the necessary rustdoc comments.
• I have added the necessary unit tests and integration tests.
• This PR does not require documentation updates.

[codecov]

Codecov Report

Attention: Patch coverage is 77.82258% with 55 lines in your changes are missing coverage. Please review.

Project coverage is 85.01%. Comparing base (3ee5336) to head (57602c9).
Report is 4 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3466      +/-   ##
==========================================
- Coverage   85.49%   85.01%   -0.49%     
==========================================
  Files         896      896              
  Lines      147518   147773     +255     
==========================================
- Hits       126127   125633     -494     
- Misses      21391    22140     +749     

[waynexia]

I've skimmed this patch and it looks good to me. Thanks for undertaking this overwhelming challenge 💯

[evenyag]

Mostly LGTM.