GitLab

* add bruteforce impl

* add support for bruteforce-sharemem

* modify python API

* add tests

* change file path

* change python API

* fix lint

* fix test

* also check worst_dist in the last few dim

* use heap and early-stop on CPU

* fix lint

* fix lint

* add device check

* use cuda function to determine max shared mem

* use cuda to determine block info

* add memory free for tmp var

* update doc-string and add dist option

* fix lint

* add more tests
Co-authored-by: Quan (Andy) Gan <coin2028@hotmail.com>
Co-authored-by: Minjie Wang <wmjlyjemaine@gmail.com>

* add submodule nanoflann

* finish python API for knn

* finish ndarray adaptor

* finish cpu-kdtree version of knn

* use openmp

* add endline

* upt

* upt

* fix format and code style

* upt

* add warning for gpu-cpu copy

* avoid contiguous copy
Co-authored-by: Quan (Andy) Gan <coin2028@hotmail.com>
Co-authored-by: Tong He <hetong007@gmail.com>