BaseCompilerProperties: add AidlInterface struct for aidl_interface info

This is necessary for cc_cmake_snapshot to snapshot and generate build
rules for actual source files (AIDL files) and not generated cpp
sources. Otherwise, this information is inaccessible for cc module after
aidl_interface pass.

Bug: 302718225
Test: Build aosp/2798713
Change-Id: I991e73f74d7551d21f337a7161cce55ba51fec71