Support using `nameof` to generate literal strings (specifically in Attribute parameter lists).

**I propose we** allow the `nameof` function to work at compile time, specifically in attribute parameter expressions like the following:

```fsharp
/// Represents information about programming constructs like variables, classes,
/// interfaces etc.
type SymbolInformation =
{
....
/// Tags for this symbol.
Tags: SymbolTag [] option

/// Indicates if this symbol is deprecated.
/// @deprecated Use tags instead
[.Tags) + " instead")>]
Deprecated: bool option
....
}
```

**The existing way of approaching this problem in F# is** to hard code member names in the strings, leaving them prone to drift out of date.

## Pros and Cons

**The advantages of making this adjustment to F# are** more uniform behavior of the nameof helper.

**The disadvantages of making this adjustment to F# are** expansion of the set of data that is computable at compile time, user confusion around when certain functions can be used.

## Extra information

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

**Related suggestions:** https://github.com/fsharp/fslang-suggestions/issues/1347

## Affidavit (please submit!)

Please tick these items 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] This is a language change and not purely a tooling change (e.g. compiler bug, editor support, warning/error messages, new warning, non-breaking optimisation) belonging to [the compiler and tooling repository](https://github.com/dotnet/fsharp)
* [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
* [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

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.

Start by reviewing the proposed Attribute example and the related suggestion #1347, then compare current nameof behavior with attribute parameter expression rules. A complete change would define the compile-time behavior and demonstrate that the example is accepted while producing the intended literal string.

Written by the indexing model from the issue text.