fix: use the implementations entity type

Signed-off-by: Laszlo Hornyak <laszlo.hornyak@gmail.com>
added audit

- entity type
- audit dao

Signed-off-by: Laszlo Hornyak <laszlo.hornyak@gmail.com>
read-only rest service for audit log

Signed-off-by: Laszlo Hornyak <laszlo.hornyak@gmail.com>