[Issue 23359] Rename InOut to ParameterStorageClass

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=23359

--- Comment #3 from Bolpat <qs.il.paperinik at gmail.com> ---
(In reply to Dennis from comment #1)
> (In reply to Bolpat from comment #0)
> > Note: not only change the name in functions.dd, but also in DMD.
> 
> Where do you see the name `InOut` or similar in DMD?

I found this:
https://github.com/dlang/dmd/blob/master/druntime/benchmark/gcbench/vdparser.extra/vdc/parser/decl.d

I renamed grammar entities in 2020 and was asked to replicate the renaming in
the parser.

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