On debug builds, introduce audit logging of apps targeting SDK <= 28
that execute native code from a non-priv app home directory via
execve() or dl_open().

Bug: 111338677
Test: Builds + boots.
Test: Launch app that uses private .so files, see granted logs.
Change-Id: I5880801d3a29cbf2c1cf4e0d72adc69a9d548952