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

A generated bash client can only send JSON objects, not JSON arrays or ordinary string payloads.

Example:
Creating the following operation with a request body requiring a non-JSON string:

{
  "put": {
    "operationId": "bar",
    "parameters": [
    ],
    "requestBody": {
      "description": "String to be parsed",
      "content": {
        "application/json": {
          "schema": {
            "type": "string"
          }
        }
      },
      "required": true
    }
  }
}

On the server I would like to receive the raw string:

 @PUT
 public void bar(String body) {
    System.out.println("Request body: " + body);
  }

At the time of writing my only option is to write the payload to a file or send it as JSON:

./client.sh --host http://localhost:8080 bar body==hello

The above results in the JSON blob:
{"body": "hello world"}

Describe the solution you'd like

I would like to instead write:
./client.sh --host http://localhost:8080 bar --body=hello

And receive the string: hello

Describe alternatives you've considered

I have considered a file with the payload but it is very awkward and cumbersome to use.