Whitespaces in path causes error

When executing the dotnet build, the package is searching for wit-bindget, but if your path contains whitespaces the string path get cut.

Workaround:

declare in your csproj

```xml
<PropertyGroup>
    <WitBindgenExe>path\without\whitespaces\to\wit-bindgen.exe</WitBindgenExe>
</PropertyGroup>
```