add f16 and f128 support

[vrtgs]

add initial support for f16 and f128, next steps are to add this support in serde_test if this lands

helps with adding ecosystem support par in rust-lang/rust#116909

[Mingun]

Like the others:

Suggested change

	/// The default implementation forwards to visit_f64.
	/// The default implementation forwards to [`visit_f64`].

[vrtgs]

this break documentation build sadly

[Anders429]

You'll need to add something like:

[`visit_f64`]: #method.visit_f64

at the bottom of the doc comment.

[Mingun]

Very strange, that documentation is broken, it should be broken in other places as well. The correct link should be

[`visit_f64`](Self::visit_f64)

[Anders429]

I think either way should work. You can see that it does link correctly on docs.rs for the other links for this trait. For example: https://docs.rs/serde/latest/serde/de/trait.Visitor.html#method.visit_u64

[Mingun]

Of course, just intralinks can be checked by the compiler

[Mingun]

You need to roll back the removal of integer128, the maintainers will not approve it.

My reviews means nothing, I do not have any rights in this repository. So probably request my reviews is pointless...

[bioinformatist]

@vrtgs Any news for this?

[vrtgs]

I've implemented everything stated here, but there is no maintainer that gave this attention so far