Convert dataclass to dict

[samwaseda]

Forgot to append it to #61

[github-actions]

👈 Launch a binder notebook on branch pyiron/flowrep/asdict

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 96.07%. Comparing base (f788b97) to head (1a73d7c).
⚠️ Report is 3 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #62      +/-   ##
==========================================
+ Coverage   96.05%   96.07%   +0.01%     
==========================================
  Files           3        3              
  Lines         659      662       +3     
==========================================
+ Hits          633      636       +3     
  Misses         26       26              

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[Copilot]

Pull request overview

This PR adds support for dataclass instances as input values in workflow nodes by converting them to dictionaries before JSON serialization. The change prevents serialization errors that would occur when hashing workflow nodes containing dataclass values.

• Imports asdict and is_dataclass from the dataclasses module
• Adds a conditional check to detect dataclass instances in node input values
• Converts dataclass instances to dictionaries using asdict() before storing them in the hash dictionary

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