[XFRM_MSG_GETSA] Support xfrm_address_t and xfrm_usersa_id

Add xfrm_address_t and xfrm_usersa_id structs

Bug: 308011229
Test: atest NetworkStaticLibTests:com.android.net.moduletests.util.netlink
      (new tests added)
Change-Id: I552983d7e768e7fb8ba307ffc55060c8b35e7436