Create a SipDetails file and set it as a variable in ImsRegistrationAttributes

In order to more quickly debug issues during the registration, the caller should have access to specific SIP signaling information.
To access SIP information, create a class including SIP information and set it as a variable in the class related to IMS registration.

Bug: b/238192631
Test: atest ImsRegistrationTests
Change-Id: Ic41fe4f88bbbd8d4502516551663763de8a743dc