OOTB and custom components import

[AndreiShilov]

Issue:

Current implementation is not flexible.
OOTB (coral wrapper) components and custom components are hardcoded in one place. Separation concept should be introduced. End user should decide what components he wants to use and register custom components in an easy way.

Idea:

Introduce 'ComponentsManager' this class will have

• register(component)
• registerAll(component)
• get(cmpID)
• getAllComponent()

before App initialization user can register set of components he wants to use

[AndreiShilov]

@HerrZatacke wdyt?