ruby client adapter for httpx (#16718)

* added isTyphoeus property to remove negations on isFaraday

* adding httpx support as alternative library for ruby client

* updated samples

samples/openapi3/client/features/dynamic-servers/ruby/lib/dynamic_servers/api_client.rb

@@ -17,6 +17,7 @@ require 'tempfile'
 require 'time'
 require 'typhoeus'
 
+
 module DynamicServers
   class ApiClient
     # The Configuration object holding settings to be used in the API client.
@@ -221,7 +222,7 @@ module DynamicServers
       return nil if body.nil? || body.empty?
 
       # return response body directly for String return type
-      return body if return_type == 'String'
+      return body.to_s if return_type == 'String'
 
       # ensuring a default content type
       content_type = response.headers['Content-Type'] || 'application/json'

samples/openapi3/client/features/dynamic-servers/ruby/lib/dynamic_servers/configuration.rb

@@ -370,5 +370,6 @@ module DynamicServers
       url
     end
 
+
   end
 end