add Heterogeneous enum, and description (#18930)
add Heterogeneous enum, and description (#18930)

Add description of use for enums
raisedadead/FreeCodeCamp,BhaveshSGupta/FreeCodeCamp,raisedadead/FreeCodeCamp,pahosler/freecodecamp,jonathanihm/freeCodeCamp,otavioarc/freeCodeCamp,HKuz/FreeCodeCamp,jonathanihm/freeCodeCamp,FreeCodeCamp/FreeCodeCamp,BhaveshSGupta/FreeCodeCamp,otavioarc/freeCodeCamp,BhaveshSGupta/FreeCodeCamp,HKuz/FreeCodeCamp,FreeCodeCamp/FreeCodeCamp,pahosler/freecodecamp