Nice to have: Generic way to assert if value is a primitive type

[alexsomesan]

When implementing recursive traversal functions, I find myself repeatedly doing checks like:

var val tftypes.Value
...
if val.Is(tftypes.String) || val.Is(tftypes.Number) || val.Is(tftypes.Bool) || val.Is(tftypes.DynamicPseudoType) {
  // no more recursion - do stuff with value and return
}
// Implement recursion for complex types

It would be great to have a more concise way to check if the value is a primitive.
I guess I'm suggesting something like:

func (val *Value ) IsPrimitve() bool {
  return val.Is(tftypes.String) || val.Is(tftypes.Number) || val.Is(tftypes.Bool) || val.Is(tftypes.DynamicPseudoType)
}