[DMN Editor] Graph View - Add support for using FEEL built-in data-types

Decision, BKM and InputData can have an "output data-type" selected.

Add support for selecting FEELs built-in types.

PR Acceptance test

For Decision, BKM and InputData

1. Check data type can be changed
   1. Check built-in data type can be selected
   2. Check state after save and reopen
   3. Change Selection
   4. Check state after save and reopen
2. Check data type can be loaded
   1. Repeat the scenario above with file not created by RedHat DMN Designer
3. Mouse/keyboard operations with select box DROOLS-2583