Add new test file for component-interface feature

src/test/resources/testing/CarInterface.ema

+package testing;
+
+component interface CarInterface { // interface defines the contract with developed physic engine simulator
+   ports in GPS posCar,
+         in Q(0 km/h : 0.1 km/h: 250 km/h) carSpeed,
+         in Q(0 cm : 0.1 cm : 100 cm) distanceFront[20],
+         out Q(0 lx : 2 lx : 60 lx) leftFrontLights[40],
+             Q(-10 m/s^2 : 0.01 m/s^2: 15 m/s^2) acceleration,
+             Q(-90°: 0.2°:90°) steering;
+}