/runtimes/osx-x64/native/ binaries not found when calling H5T

I am using HDF.PInvoke.1.10 with F# on OS X. However, `H5F.create()` results in the following exception being thrown:

```
Unhandled exception. System.TypeInitializationException: The type initializer for 'HDF.PInvoke.H5T' threw an exception.
---> System.TypeInitializationException: The type initializer for 'HDF.PInvoke.H5DLLImporter' threw an exception.
---> System.IO.FileNotFoundException: hdf5
at HDF.PInvoke.H5MacDllImporter..ctor(String libName) in /home/appveyor/projects/hdf-pinvoke-1-10/src/HDF.PInvoke.1.10/H5DLLImporter.cs:line 169
at HDF.PInvoke.H5DLLImporter..cctor() in /home/appveyor/projects/hdf-pinvoke-1-10/src/HDF.PInvoke.1.10/H5DLLImporter.cs:line 42
--- End of inner exception stack trace ---
at HDF.PInvoke.H5T..cctor() in /home/appveyor/projects/hdf-pinvoke-1-10/submodules/HDF.PInvoke/HDF5/H5Tglobals.cs:line 38
--- End of inner exception stack trace ---
at Program.Hdf5AttributeRW@9.Program.IHdf5ReaderWriter.WriteStrings(Int64 id, String name, String[] data) in /Users/davidmeijer/Dropbox/My Mac (Davids-Mac-mini.local)/Downloads/h5/Program.fs:line 11
at Program.run() in /Users/davidmeijer/Dropbox/My Mac (Davids-Mac-mini.local)/Downloads/h5/Program.fs:line 18
at .$Program.main@() in /Users/davidmeijer/Dropbox/My Mac (Davids-Mac-mini.local)/Downloads/h5/Program.fs:line 23
```

The following code sample in a F# project reproduces the previously shown error:
```
module Program

open HDF.PInvoke

type IHdf5ReaderWriter =
abstract WriteStrings: int64 * string * string [] -> unit

let Hdf5AttributeRW () =
{ new IHdf5ReaderWriter with
member _.WriteStrings (id : int64, name : string, data : string []) =
let dataType = H5T.create(H5T.class_t.STRING, H5T.VARIABLE)
()
}

let run () =
let fileId = H5F.create("./test_hdf5.h5", H5F.ACC_TRUNC)
let rw = Hdf5AttributeRW()
rw.WriteStrings(fileId, "version", [| "0.1.0" |])
H5F.close(fileId) |> ignore
0

[]
run() |> printfn "%A"
```

I managed to find a work-around by copying the binaries in `/runtimes/osx-x64/native/` directly to the `bin/Debug/net5.0` folder. I'm not sure, but I think the exception is caused by the `H5MacDllImporter` not being able to properly find those files.

I was hoping somebody could shed some light on this issue for me. Thanks!