FilterParams used by variant baselining should be configurable

[mfsoliveira]

Original issue: https://github.com/IETS3/iets3.core/issues/1629

Currently the variant baselining feature always uses standard FilterParams. If the application project uses specific handlers for copying, renaming etc., then there is no way to configure this.

Thus, variant baselining does not work correctly in applications which use specific FilterParams. Expected: It should be possible to provide specific FilterParams for variant baselining.

See implementation of method VariantBaselineUtil.apply100Percent as a starting point.