Decouple consolidate and vacuum operations

[NikolaosPapailiou]

Vacuum operations are not process safe and therefore we should avoid coupling them with consolidation operations in order to maintain thread/process safety for vector search updates

[jparismorgan]

Looks good, though we'll also need to do this for VAMANA and IVF_PQ at some point. Also curious if we could check that it worked correctly in a unit test, though if that's hard to do I'm okay to skip it.

[NikolaosPapailiou]

Looks good, though we'll also need to do this for VAMANA and IVF_PQ at some point. Also curious if we could check that it worked correctly in a unit test, though if that's hard to do I'm okay to skip it.

Sure we need to apply the same logic also in C++ for the new algorithms.
I added code to exercise this in the unit tests.