Install symbols for JNI libraries

When building an app in Soong with JNI libraries copy the unstripped
libraries to the symbols directory in directory that matches the
installed path of the APK.

Bug: 159726429
Test: forrest
Change-Id: If8e423c7cdf3afd518761b5ab6bc857321acda46
Merged-In: If8e423c7cdf3afd518761b5ab6bc857321acda46
(cherry picked from commit e926cab3)