Create operation to copy data from local to device memory with staging

[axsaucedo]

Currently the only way to copy data from the local tensor vector to device memory is when using the OpCreateTensor command, which would handle the creation of the staging tensor. Because of this limitation, the only way to continuously update a tensor for GPU processing after creation is by creating it as type TensorTypes::eStaging and run mapDataIntoHostMemory() after the vector data is updated. There should be a command that enables for the copy to device with a staging tensor, such as OpMapToDevice.