Use generics::fit()

[topepo]

Closes #161

When we make a new generic for fit(), it does not work when the S3 method for fit() is available. This PR just re-exports generics::fit() to solve the issue.

[Copilot]

Pull Request Overview

This PR addresses issue #161 by re-exporting the fit() and required_pkgs() generics from the generics package instead of defining custom generics within the package. This ensures compatibility when the generics package is loaded.

• Removes custom generic definitions for fit() and required_pkgs()
• Re-exports these generics from the generics package
• Adds test to verify fit() works correctly when generics package is loaded

Reviewed Changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
R/filtro-package.R	Adds re-exports of fit and required_pkgs from generics package
R/class_score.R	Removes custom generic definitions for fit and required_pkgs
DESCRIPTION	Adds generics package as a dependency
NAMESPACE	Updates imports to include generics functions
tests/testthat/test-score-cor.R	Adds test case to verify fit() works with generics package loaded
man/ files	Updates documentation to reflect re-exported generics
tests/testthat/_snaps/score-cor.md	Updates error message snapshots

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[EmilHvitfeldt]

looks good! tested it many times and it appears to work