Publish as single file?

I am trying to publish an `fsharp_binary` as a single file, equivalent to:

```bash
dotnet publish -c Release --runtime linux-x64 --self-contained -p:PublishSingleFile=true
```

Is this possible? It appears that this is a TODO?
https://github.com/bazelbuild/rules_dotnet/blob/master/dotnet/private/rules/publish_binary/publish_binary.bzl#L83-L89

If so, I guess we can use this issue for tracking.

Start in dotnet/private/rules/publish_binary/publish_binary.bzl at lines 83-89, then compare the requested dotnet publish command with the current fsharp_binary publishing behavior. Done means determining how to support the equivalent PublishSingleFile, runtime, configuration, and self-contained settings, with the resulting publish output verified.

Written by the indexing model from the issue text.