Remove parameter values of unsatisfied dependencies

[be-marc]

• required and dependency check can be activated in ParamSet$check(check_strict = TRUE). Default is FALSE
• get_values(remove_dependencies = TRUE) (better name?) removes all parameter values with unsatisfied dependencies. Default is TRUE.
• We added three new parameter to get_values() in recent months: type = c("with_token", "without_token", "only_token"), check_required = TRUE and remove_dependencies = TRUE. We might want to make check_required and remove_dependencies one parameter. TRUE returns valid parameter values and FALSE the parameter values like they are stored currently. For type, we need all three options in mlr3tuning.