Revert "Remove c++ implementation of aconfigd"

This reverts commit 7780e0477ec6c053fcbbb4d8afd3a5827fb1f42f.

Reason for revert: Droidmonitor created revert due to potential culprit for b/390175799, b/390065295. Will be verifying through ABTD before submission.

Change-Id: I3be2891ff679ee6b33e01655c24486ba1f2f3c70
26 files changed