feat(Utils); add a DatesR argument in the .GetFeatModel function in order to manage the TimeUnit

Refs #106
4 jobs for 106-runmodel_cemaneige-fails-in-createinputsmodel-at-the-hourly-time-step
Status Name Job ID Coverage
  Build
canceled build_patched #161964

 
  Regression
canceled regression_patched #161965

 
  Tests
canceled check_as_cran_patched #161967

canceled check_not_cran_patched #161966