Add typing support to faraday-client-adapter

[MaryamAdnan3]

Description

As part of adding Ruby types in our SDKs, we will be adding types to our core library. Following are the components of core library. Each task will take 0.5 - 2 hr.

Tasks

• faraday.rb
• faraday_client_test.rb
• test_helper.rb
• faraday_response.rb
• http_client_configuration.rb
• http_request.rb
• http_response.rb
• http_response_factory.rb
• mock_helper.rb