bugfix: fix import type for enums

[SebastienGllmt]

Background:

1) Typescript enum is converted to a regular object type by flowgen 2) Typescript allows you to do import type on an enum type. However, Flow doesn't allow you to import type on a regular object type 3) To allow enum values as a function parameter in Flow, you need to accept $Values<...> as the argument

Bug: 1) Using import type on an enum generated invalid Flow that tried to import an object as a type. 2) Code using enums as types was using the generated object directly as the type, but it needs to use the $Values<...> Flow notation

Fix: 1) The new code now uses import typeof which is valid Flow notation 2) $Values is properly used for enums

[orta]

Cool, nice write-up, makes sense 👍🏻