Removed functions which allowed get/set properties without device name. This use case is not documented in openvino docs, and the openvino c-api do not allow not passing device name, so this change adheres to that.
Pass property_key as reference instead of value
Added tests related to supported properties and RW properties for CPU
I've opened an issue here https://github.com/openvinotoolkit/openvino/issues/24911 and will update with more tests based on the resolution there at a later point if need be (for example adding more tests checking unsupported cpu properties etc. It is undocumented right now, so haven't added those tests yet).
property_keyas reference instead of value