Set a system property at boot for the embeded profile feature.

Feature flags are not yet supported in mainline modules. As a temporary
workaround, we set system properties during boot from the module (using
art_boot) to indicate what features this module has. Those system
properties should be cleaned up once flags are supported.

Bug: 308137424
Test: Presubmit

Change-Id: Ic767ca5049c332080c273820c69a240b4a343e6d