Created class Vector2
-Created class Vector 2 which represent 2d vector and base vector operations (+,-,*,/)
-Created base structure of Simulator class
Created food
-Food is just type of Particle
-Bool isPredator changed to particle type (SIMPLE, PREDATOR, FOOD)
-Different colors in Drawer for different types
Created basic functionality of simulator
-Simple force-based physics engine (just second Newtown's law, yeah)
-Particles flying
--Simple fly to food, out of the predators and each other
--Predators fly to simple and out of the each other
--Food don't fly

-No eating and health yet
-Particles can't reach the target (needs PID)