Feature/fiber

[NameHaibinZhang]

add fiber v2

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 83.81%. Comparing base (94b8b9f) to head (9cd02a9). Report is 3 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #210 +/- ## ======================================= Coverage 83.81% 83.81% ======================================= Files 19 19 Lines 791 791 ======================================= Hits 663 663 Misses 102 102 Partials 26 26 ```

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[123liuziming]

LGTM, I will merge it tonight if nobody raise a new comment

[123liuziming]

@NameHaibinZhang Don't forget to update README.md in the root directory

[NameHaibinZhang]

@NameHaibinZhang Don't forget to update README.md in the root directory

this change is changed