[FEA] Migrate ANN algorithms from RAFT to cuVS

[cjnolet]

The goal here is to formally migrate all of the ANN APIs which are being compiled into libraft.so into cuVS and compile them into libcuvs.so so we can officially remove the dependency of libraft.so from cuVS and allow cuVS to maintain the implementations moving forword while we deprecate and eventually remove them from RAFT.

• Migrate cuvs::distance (Moving and renaming distance namespaces from raft -> cuvs #85)
• Migrate cuvs::neighbors::ivf_flat (Migrate IVF-Flat from RAFT #94)
• Migrate cuvs::neighbors::ivf_pq (Migrate IVF-PQ from RAFT to cuVS #86)
• Migrate cuvs::neighbors::brute_force
• Migrate cuvs::neighbors::cagra (Moving CAGRA from RAFT #100)

[cjnolet]

cc @vyasr @mmccarty