Refactor DKG parameters into a DkgParams

[piotr-roslaniec]

Type of PR:

• Refactor

Required reviews:

• 1

What this does:

• Refactors DKG parameters usage and validation into DkgParams
• Uses test_case crate in tests to duplicate test scenarios
• Refactors shared test utils and variables into ferveo::test_common module
• Replaces some panics with proper error handling and error types
• Fixes some outstanding TODOs

Notes for reviewers:

• This PR contains no API changes. I opted to address these changes here to avoid bundling them with PRs that contain functional changes, making it easier to review them.
• Reviewing commit by commit should be easier
• Based on Assorted chores #166 - Please review it first

[codecov-commenter]

Codecov Report

Attention: 25 lines in your changes are missing coverage. Please review.

Comparison is base (7350d91) 78.10% compared to head (feee2f3) 77.76%.

❗ Current head feee2f3 differs from pull request most recent head aebaab3. Consider uploading reports for the commit aebaab3 to get more accurate results

Files	Patch %	Lines
ferveo/src/bindings_python.rs	68.18%	14 Missing ⚠️
ferveo/src/api.rs	96.95%	5 Missing ⚠️
ferveo/src/bindings_wasm.rs	0.00%	3 Missing ⚠️
ferveo/src/dkg.rs	94.00%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #169      +/-   ##
==========================================
- Coverage   78.10%   77.76%   -0.34%     
==========================================
  Files          23       24       +1     
  Lines        5097     5105       +8     
==========================================
- Hits         3981     3970      -11     
- Misses       1116     1135      +19     

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

[manumonti]

Definitely I'm not an expert on this field, but it makes sense what I see here.