Add `NFDataX` instances for types in `Data.Functor.*` modules

[alex-mckenna]

In base there are several types exposed in the Data.Functor.* hierarchy which can have instances for NFDataX but have been overlooked in Clash:

• Identity
• Const
• Product
• Sum
• Compose (since minimum supported GHC is 8.6 we have -XQuantifiedConstraints and can do this too)

We should add instances for these for the users that like to use these types (this issue motivated by a request on the functional programming slack for NFDataX (Identity a))

[martijnbastiaan]

We've released v1.6.4, which includes a fix for this issue.