Derive copy and clone traits

[bbist]

Description

Type of Change

• [ ] Bug fix (non-breaking change which fixes an issue)
• [x] New feature/Enhancement (non-breaking change which adds functionality or enhances an existing one)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] Documentation update
• [ ] Refactor
• [ ] New or updated tests

Checklist

• [ ] I have performed a self-review of my code.
• [ ] I have commented my code where necessary.
• [ ] I have updated the documentation if needed.
• [ ] My changes do not introduce new warnings.
• [ ] I have added tests that prove my changes are effective or that my feature works.
• [ ] New and existing tests pass with my changes.

Related Issues

[codecov[bot]]

Codecov Report

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

Project coverage is 56.68%. Comparing base (a6af246) to head (ddb6599). Report is 4 commits behind head on bitvm2.

@@            Coverage Diff             @@
##           bitvm2     #464      +/-   ##
==========================================
+ Coverage   56.64%   56.68%   +0.03%     
==========================================
  Files         249      249              
  Lines       28064    28066       +2     
==========================================
+ Hits        15897    15908      +11     
+ Misses      12167    12158       -9     

Files with missing lines	Coverage Δ
crates/state/src/chain_state.rs	94.44% <100.00%> (+0.21%)	:arrow_up:

... and 8 files with indirect coverage changes