in wfc.hpp there are 2 random selector structs. I want you to create another one that can be used to give weights to values.
use 16-bit for the individual weights for each value. The weights should work at compile time.
The WeightedSelector is a RandomSelector that uses another random selector as a backend.
example of how the weights should work:
Builder::
    ::DefineIDs<...>
    ::DefinedConstrainer<...>
    ::SetRandomSelector<...>
    ::Weights<DEFAULT_WEIGHT, Weight<VarT, WEIGHT>, Weight<VarT, WEIGHT>, ...>
    ::Build