COMPMID-1180: Add support for bucket multi-threading (Part2)

- Introduced some Hints allowing the function to set its favourite splitting method for a given workload
- Implemented the bucket split (Disabled by default)

Change-Id: I3a48dfb0bd0ec8b69a44d9c4a4c77ad3f6dc9827
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/133079
Tested-by: Jenkins <bsgcomp@arm.com>
Reviewed-by: Gian Marco Iodice <gianmarco.iodice@arm.com>
8 files changed