Champion "CallerArgumentExpression" is currently in the C# team's working set.

I propose we support this attribute, which has been present since .NET Core 3.0. We can match this attribute by namespace so that it can be defined even when outside .NET Core.

The motivation, pros, and cons can be seen in the C# proposal. To summarize, this allows developers to capture the expressions passed to a method, to enable better error messages in diagnostic/testing APIs and reduce keystrokes.

Extra information

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

Related suggestions: #463 - F# compiler should support CallerLineNumber, CallerFilePath etc (Completed for F# 4.1)

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• This is not a breaking change to the F# language design
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