feat(dataclasses): add dataclasses integration

[XuehaiPan]

Description

Describe your changes in detail.

Motivation and Context

Why is this change required? What problem does it solve?
If it fixes an open issue, please link to the issue here.
You can use the syntax close #15213 if this solves the issue #15213

• I have raised an issue to propose this change (required for new features and bug fixes)

Resolves #122

Types of changes

What types of changes does your code introduce? Put an x in all the boxes that apply:

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds core functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation (update in the documentation)

Checklist

Go over all the following points, and put an x in all the boxes that apply.
If you are unsure about any of these, don't hesitate to ask. We are here to help!

• I have read the CONTRIBUTION guide. (required)
• My change requires a change to the documentation.
• I have updated the tests accordingly. (required for a bug fix or a new feature)
• I have updated the documentation accordingly.
• I have reformatted the code using make format. (required)
• I have checked the code using make lint. (required)
• I have ensured make test pass. (required)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (35618b3) to head (34b5b58).
Report is 29 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##              main      #142    +/-   ##
==========================================
  Coverage   100.00%   100.00%            
==========================================
  Files           10        11     +1     
  Lines         1021      1150   +129     
==========================================
+ Hits          1021      1150   +129     

Flag	Coverage Δ
unittests	100.00% <100.00%> (ø)

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

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[srush]

Any updates on this? Can I help?

This feature is keeping me from porting a bunch of code to optree.

[XuehaiPan]

Any updates on this?

Thanks for pinging this. The PR is almost done. I will add some unit tests and get it merged this weekend.

[srush]

🔥