Feature request: Use required keyword for required properties of Input-type class'

[jonmaylandvitrolife]

Is your feature request related to a problem? Please describe. Adding a new argument to an input-type (e.g. for a mutation) might result in a runtime error if the argument is required. It would be really nice to get a compile time error.

Describe the solution you'd like Could the required keyword be added to required properties of the input-type class

Describe alternatives you've considered

Additional context