Add abstract sender and receiver class

[grzesta05]

We're dividing SimulationObjects into 2 groups:

• Sender
• Receiver

Sender, eg. Laser, sends light rays into the Simulation space.

Receiver listens for contact with light rays. It may also be Sender at the same time, modifying the light rays.

I'm not going to owijać w bawełnę - this might be the hardest part to do in the project. The light rays should have properties such us:

• color,
• angle
• //To add more, We have to think about that

If you have any questions or propositions, write here in the comments

[grzesta05]

@Bruhtek tu jest issue do tego

[grzesta05]

można zamknąć? @Bruhtek @dkomeza ?