Get rid of shared ptr in ECS

[RohacekD]

Describe the bug The usage of shared ptr in ECS was a great simplification for the beginning of this project. But as the project grows it proves itself to be a huge ball on a chain. I would like to get rid of this part of the code. Alongside it, we will need to rethink how dependencies are being handled in components. Do I really need a parent pointer inside the components themselves?

A lot of those problems comes from the fact that components right now are handling multiple things. They should take care of their functionality but should not care about GPU resources loading/streaming etc.

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