* [Auto Parallel] Pybind11 ProcessMesh and DeviceMesh

* [Auto Parallel] Fix the unittest problem

* [Auto Parallel] Explicitly add the src file for auto_parallel target

* [Auto Parallel] Add the proto depedency explicitly

* [Auto Parallel] Fix the cmake bug on windows and mac

* [Auto Parallel] Remove the pybind11 header file in process_mesh.h

* [Auto Parallel] Add the c++ dist attrs

* [Auto Parallel] Remove some codes to be less than 1000 lines

* [Auto Parallel] Add ProcessMesh, DeviceMesh and DistributedMapper

* [Auto Parallel] Remove unecessary codes

* [Auto Parallel] Comment out unnecessary cmake statements