Micka

Scann is using `process_and_fill_codes_subspaces` but this code is already present in `vpq_dataset.cuh`. The code in `vpq_dataset.cuh` is more recent because it supports batching. This PR removes the duplicated code.

Add support for PQ preprocessing API

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Related issue: #107 This PR adds support for a PQ preprocessing API. It gives access to `train()`, `transform()` and `inverse_transform()` function that can be used to transform a dataset into...

While CI was running on a Java PR, this C++ test failed: ``` [ RUN ] AnnNNDescentTest/AnnNNDescentTestI8_U32.AnnNNDescent/116 [859479][06:35:48:642681][info ] Recall = 0.885602 (113357/128000), the error is 14.4% above the threshold...

Initial deprecation of CAGRA uint8 API

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WIP This PR will deprecate uint8 API of CAGRA. So far the build and search operations are replaced by mapping the data to int8 to still offer some support for...