[Windows] build only tvm runtime

Hi ,

In Linux ,we can generate only tvm runtime (lib_tvm_runtime.so) using the tutorial https://github.com/dmlc/tvm/tree/master/apps/howto_deploy .

Is there any tutorial/ cmake command for windows ,only to build tvm_runtime dll from the tvm source .

When you use cmake to create a solution, there should be a project named tvm_runtime and you ca use MSVC to only build that