support for binary request body and binary response in ruby

[baywet]

related to #134 and associated pull request.

The http request adapter implementation needs to handle binary requests (photo upload) and binary responses (file download). This may require additional methods to be defined in the request adapter interface and the executor generator method to be updated.

[baywet]

After doing some research it appears that streams are materialized by the IO class.
We might need to set the raw body of the request and access the raw body of the response, as well as to configure the multipart middleware, more information

payload[:raw_data] = Faraday::Multipart::ParamPart.new(
  { a: 1 }.to_json,
  'application/json'
)

When the request/response body is a string type, we'll have to use the stringIO wrapper which probably won't any memory improvements but will standardize the kind of objects we're passing around between the layers to support scenarios like uploading files.

Note: parseNode and serialization writer will have to implement close, and the code-gen will need to be updated to use blocks to auto-close instances

Edit for primitives https://stackoverflow.com/questions/7862735/deserialize-json-primitives-with-the-built-in-ruby-json-library

[baywet]

This also needs to be handled in the serialization code

kiota/src/Kiota.Builder/Writers/Ruby/CodeMethodWriter.cs

Line 375 in 6e9ec1e

"binary" or "Binary" or "base64" or "base64url" => "get_string_value()", //TODO: add support for binary