Wasm Binding: Reading commandline args

**What content needs to be created or modified?**

The existing documentation on [Wasm Binding](https://docs.dapr.io/reference/components-reference/supported-bindings/wasm/) writes that a Wasm program can be invoked with "commandline args or environment variables to it".

I compiled my C# program into Wasm and tried to obtain the commandline args using the following code, and all options failed to work (I'm still not sure how to get it to work):

1. `Environment.GetEnvironmentVariables()`
2. `Environment.GetCommandLineArgs()`
3. `args`
4. `Console.In.ReadLine()`

I'm using the request body located at the end of the documentation.

**Describe the solution you'd like**

Having examples of how to read these commandline args in various languages, including C#.