* simplify deps management
* skip visibility flags for MSVC
* simplify cuda deps
* naming
* workaround for cmake<3.17
* add spdlog dependency
* move the enablement of CUDA to top level CMakeLists.txt
* fix MSVC build
* fix lint
* fix build for backend ops only
* remove comment
* allow to use apis/python as a standalone project
* remove redundant cmake code
* control shared or static lib using `MMDEPLOY_SHARED_LIBS` instead of `BUILD_SHARED_LIBS`
* fix MSVC build
* update docs