This allows:

- setting of log_level for AAE Backend;
- setting of log_level for TictacAAE overall (hidden);
- setting of compression method (support switch to better performing zstd).

Previously all AAE backends had the database ID 2 ^16 - 1.  They now have an ID 2 ^ 16 + Partition Number e.g. with a ring size of 1024 the partition numbers will be 0 to 1023).  This allow leveled logs in parallel mode AAE to be distinguished from leveled vnode logs, and also distinguished between vnodes.