Merge changes from topic "revert-3212512-XCWURMYNFC" into main

* changes:
  Revert "libprocessgroup: Remove cgroup.rc file"
  Revert "libprocessgroup: Remove dependency on libcgrouprc"
  Revert "libprocessgroup: Remove ACgroupController_getMaxActivati..."
  Revert "libprocessgroup: Combine all 3 ActivateControllers imple..."