Ease creating derived program instances

[Paebbels]

The following method was tested with GHDL to derive program instance variants:

def _CopyParameters(self, tool: "GHDL") -> None:
  for key in self.__cliParameters__:
    if self._NeedsParameterInitialization(key):
      value = self.__cliParameters__[key].Value
      tool.__cliParameters__[key] = key(value)
    else:
      tool.__cliParameters__[key] = key()