Added TouchBehaviourTest, testing CalculateSide method
Added ClickEventHandlerTest: Not yet implemented.
Added RemoveRPCs call in RemoveBlock method of Server.cs to clear buffered instantiate RPCs.
Refactored TouchBehaviour CalculateSide to take a vector3 instead of RaycastHit and changed if statements to if-else statements.
Removed prefab argument from Server.cs/ServerLoader.cs/InitiateTest.cs, since it uses Resources folder instead.
Cleaned up Block.cs since it was still extending MonoBehaviour