[ENH] Add sample_params method to effects and proper Lift test likelihood

[felipeangelimvieira]

Closes #148, #143

[codecov]

Codecov Report

Attention: Patch coverage is 96.21212% with 5 lines in your changes missing coverage. Please review.

Project coverage is 96.15%. Comparing base (552dcfb) to head (c5752c3).
Report is 6 commits behind head on main.

Files with missing lines	Patch %	Lines
src/prophetverse/effects/base.py	90.90%	2 Missing ⚠️
src/prophetverse/sktime/base.py	66.66%	2 Missing ⚠️
src/prophetverse/effects/lift_likelihood.py	98.03%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #149      +/-   ##
==========================================
- Coverage   96.28%   96.15%   -0.14%     
==========================================
  Files          39       40       +1     
  Lines        1535     1612      +77     
==========================================
+ Hits         1478     1550      +72     
- Misses         57       62       +5     

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