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 CtsTelephonyTestCases:ImsRegistrationAttributesTest ImsServiceTest
Test: atest ImsRegistrationTests
Change-Id: Idbcd9ac2d5113a64c1d0450e4518780c0a20ed6b