[ENH] Add X and y as arguments to transform

[felipeangelimvieira]

Closes #297

[codecov]

Codecov Report

❌ Patch coverage is 95.83333% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 94.50%. Comparing base (854e72b) to head (6c089c0).
⚠️ Report is 52 commits behind head on main.

Files with missing lines	Patch %	Lines
src/prophetverse/effects/base.py	95.23%	2 Missing ⚠️
src/prophetverse/sktime/multivariate.py	87.50%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #298      +/-   ##
==========================================
+ Coverage   94.37%   94.50%   +0.12%     
==========================================
  Files          68       70       +2     
  Lines        2898     2966      +68     
==========================================
+ Hits         2735     2803      +68     
  Misses        163      163              

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