fix(frost-secp256k1-tr): add missing pub mod refresh and missing test

[StackOverflowExcept1on]

@conradoplg missed in #766
also fixes CI: cargo run --bin gencode -- --check

I'm sure how to fix warnings:

WARNING: documentation for aggregate_with_tweak is not available in base file. This can mean it's a specific type for the ciphersuite, or that there is a bug in gencode
WARNING: documentation for sign_with_tweak is not available in base file. This can mean it's a specific type for the ciphersuite, or that there is a bug in gencode
WARNING: documentation for Tweak is not available in base file. This can mean it's a specific type for the ciphersuite, or that there is a bug in gencode
WARNING: documentation for EvenY is not available in base file. This can mean it's a specific type for the ciphersuite, or that there is a bug in gencode

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 82.49%. Comparing base (5f4ac6e) to head (a7f2edc).
Report is 78 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #806      +/-   ##
==========================================
+ Coverage   82.18%   82.49%   +0.30%     
==========================================
  Files          31       41      +10     
  Lines        3188     4341    +1153     
==========================================
+ Hits         2620     3581     +961     
- Misses        568      760     +192     

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[conradoplg]

Thanks! The warnings are expected due to the ciphersuite-specific functions in the Taproot ciphersuite. I might eventually figure out a way for gencode to ignore those but it's fine for now.