Add VehicleSystem with Infantry vehicle and update scene

Introduces a new VehicleSystem including base Vehicle scripts, an Infantry vehicle implementation, and a VehiclesDatabase. Updates SampleScene.unity to reference new vehicle UI elements and objects, and makes minor cleanup in Building.cs. Also updates package manifest and project tags.

Author: EnesEfeTokta

Red Strike/Assets/BuildingPlacement/Buildings/Building.cs

@@ -8,7 +8,6 @@ public class Building : MonoBehaviour
         public Building buildingData;
         public ParticleSystem[] buildEffects;
 
-
         private float health;
         private float maxHealth = 100f;