Compile a NativeLibrary with NativeAOT

**Is your feature request related to a problem? Please describe.**

I tried to use the new .NET 7 NativeAOT NativeLibrary feature in F#, adapting the C# [official example](https://github.com/dotnet/samples/tree/main/core/nativeaot/NativeLibrary) into the following code:

```fsharp
// My attempt to expose a simple function in a Native Library build.
namespace HelloLib

open System.Runtime.InteropServices

module Say =
[]
let hello name =
printfn "Hello %s" name
```

Unfortunately, the F# compiler just returned a generic `This attribute is currently unsupported by the F# compiler. Applying it will not achieve its intended effect.`

This is frustrating because there is [this lovely 3 year old example of doing an F# native library in .NET SDK version 3](https://secanablog.wordpress.com/2020/02/01/writing-a-native-library-in-f-which-can-be-called-from-c/), which makes it seem like the current lack of support is a bit of a regression compared to the state of Native AOT in 2020.

**Describe the solution you'd like**

I would like F# to support building a NativeLibrary. Short of this, adding some newbie-friendly information to the F# documentation explaining the current state of Native AOT and the expectation for future support would also be helpful.

**Describe alternatives you've considered**

I have considered trying to wrap an F# library in a C# native library, but that feels like too much of a hack. I also am a .NET and compilers novice, so I'm not sure that this approach would even work. If this would likely work and is actually a good workaround at the moment, any pointers as to how to accomplish this would also be appreciated!

dotnet --info output

```console
dotnet --info
.NET SDK:
Version: 7.0.102
Commit: 4bbdd14480

Runtime Environment:
OS Name: manjaro
OS Version:
OS Platform: Linux
RID: manjaro-x64
Base Path: /usr/share/dotnet/sdk/7.0.102/

Host:
Version: 7.0.2
Architecture: x64
Commit: d037e070eb

.NET SDKs installed:
7.0.102 [/usr/share/dotnet/sdk]

.NET runtimes installed:
Microsoft.NETCore.App 7.0.2 [/usr/share/dotnet/shared/Microsoft.NETCore.App]

Other architectures found:
None

Environment variables:
Not set

global.json file:
Not found

Learn more:
https://aka.ms/dotnet/info

Download .NET:
https://aka.ms/dotnet/download

```