* layout-aware cpu tensor copy_from

* - add unit test case for tensor "copy_from"
- set default layout after copy_from src to destination

* - added test case to copy between two different layouts

* - fix clang error
 - added test case to check copy_from if the two tensor layouts are different
- fix the LayoutDesc comparision

* fix windows build error

* - move "cop_from" unit tests from tensor to cpu_test

* fix compilation error

* Added more unit tests

* fix read and write API in cpu_tensor_view