Add Multipath TCP (MPTCP) support

[Aperence]

MPTCP is a TCP extension allowing to improve network reliabilty by using mutiple network interface for the same TCP connection. Check https://www.mptcp.dev and https://developer.apple.com/documentation/foundation/urlsessionconfiguration/improving_network_reliability_using_multipath_tcp for details. Changes to this repository includes introducing a new Alamofire shared session (MPTCP session), and modifying the URLSessionConfigurations to set multipathServiceType to Handover