Test and integrate oneDAL

[ssheorey]

GPU (integrated / discrete) support for NN search, DBSCAN and connected components. Potentially faster on CPU.

Use v2023.x since v2024 onwards does not support macOS.

Potentially faster:

• nearest neighbor search: Compare nanoflann vs oneDAL-kNN
• DBSCAN
• connected components

Links:

• https://github.com/oneapi-src/oneDAL