Refactor metatype and component classes

[arsdever]

As of the implementation currently on scripting_api branch, the metadata and the component classes are within the library component_interface, which is not great. The library itself does not look good and is kinda meaningless. Nevertheless, in the scope of this issue, I want those classes to be moved out from that lib into probably lib project. Some steps needed to be done to achieve that:

• move metatype registry into metatype class
• replace type getter in component class to get the type from metatype registry
• update the CMakeLists file

This should probably be enough to achieve the goal.