Support disposable pattern for `ref` structs

I propose we support consuming disposable pattern for [`ref` structs](https://learn.microsoft.com/en-us/dotnet/csharp/language-reference/builtin-types/ref-struct):
> You can define a disposable ref struct. To do that, ensure that a ref struct fits the [disposable pattern](https://learn.microsoft.com/en-us/dotnet/csharp/language-reference/proposals/csharp-8.0/using#pattern-based-using). That is, it has an instance or extension Dispose method, which is accessible, parameterless and has a void return type.

In recent C# versions this pattern can be used instead of implementing `IDisposable` in a struct type. If such a change to a struct type is done in a C# project/library, then this type can't be used in a `use` binding in F# anymore, i.e this code:
```fsharp
use x = Library.Method()
...
```
has to be rewritten into this:
```fsharp
let x = Library.Method()
...
x.Dispose()
```
or preferably even this:
```fsharp
let x = Library.Method()
try
...
finally
x.Dispose()
```

The type change doesn't need any changes in referencing C# projects, so library authors may break usages in F# code without realising it.

## Pros and Cons

The advantages of making this adjustment to F# are
* being compatible with a recent C# feature that may be used in referenced libraries/projects; otherwise F# usages may get broken

The disadvantages of making this adjustment to F# are
* it needs work

## Extra information

Estimated cost (XS, S, M, L, XL, XXL): S-M

## Affidavit (please submit!)

Please tick this by placing a cross in the box:
* [x] This is not a question (e.g. like one you might ask on [stackoverflow](http://stackoverflow.com)) and I have searched stackoverflow for discussions of this issue
* [x] I have [searched both open and closed suggestions on this site](http://github.com/fsharp/fslang-suggestions/issues) and believe this is not a duplicate
* [x] This is not something which has obviously "already been decided" in previous versions of F#. If you're questioning a fundamental design decision that has obviously already been taken (e.g. "Make F# untyped") then please don't submit it.

Please tick all that apply:
* [x] This is not a breaking change to the F# language design
* [ ] I or my company would be willing to help implement and/or test this

## For Readers

If you would like to see this issue implemented, please click the :+1: emoji on this issue. These counts are used to generally order the suggestions by engagement.

The issue names no repository files or tests. Start by tracing how F# `use` bindings recognize disposable values, then compare that path with the C# disposable pattern for `ref struct` types. Done means an accessible, parameterless, void `Dispose` on a ref struct is accepted by `use` while preserving cleanup behavior.

Written by the indexing model from the issue text.