GitLab

* [Misc] clang-format auto fix.

* fix

* manual
Co-authored-by: Steve <ubuntu@ip-172-31-34-29.ap-northeast-1.compute.internal>

* rename `DLContext` to `DGLContext`

* rename `kDLGPU` to `kDLCUDA`

* replace DLTensor with DGLArray

* fix linting

* Unify DGLType and DLDataType to DGLDataType

* Fix FFI

* rename DLDeviceType to DGLDeviceType

* decouple dlpack from the core library

* fix bug

* fix lint

* fix merge

* fix build

* address comments

* rename dl_converter to dlpack_convert

* remove redundant comments

* enable cython

* add helper function and data structure for void_p vector return

* move sampler from graph index to contrib.sampling

* WIP

* WIP

* refactor layer sampling

* pass tests

* fix lint

* fix graphsage

* remove comments

* pickle test

* fix comments

* update dev guide for cython build

* include/dgl/runtime

* include

* src/runtime

* src/graph

* src/scheduler

* src

* clean up CMakeLists

* further clean up in cmake

* install commands

* python/dgl/_ffi/_cython

* python/dgl/_ffi/_ctypes

* python/dgl/_ffi

* python/dgl

* some fix

* copy right