Add Multi-GPU neighbors (scverse#465)

* Add Multi-GPU neighbors

* add warning for raft

* add back cuvs switch

* add tests

* add release note

* skip tests

* add better docs string

* make nicer

* add bbknn test

* docs

* fix umap and big data neighbors

* update umap

* add note

Author: Intron7

docs/release-notes/0.13.3.md

@@ -2,7 +2,7 @@
 
 ```{rubric} Features
 ```
-
+* Add Multi-GPU support for `pp.neighbors` (requires `cuvs >= 25.10`) with the new algorithms `mg_ivfflat`, `mg_ivfpq`, and `all_neighbors`. {pr}`465` {smaller}`S Dicks`
 
 ```{rubric} Performance
 ```