feat(shield): added shields

include/Shield.h

@@ -0,0 +1,26 @@
+#pragma once
+
+#include <iostream>
+#include <string>
+#include <SFML/Graphics.hpp>
+
+using namespace sf;
+using namespace std;
+
+class Shield
+{
+public:
+	Shield() {};
+	Shield(Window& window);
+
+	void setPosition(Vector2f position);
+
+	RectangleShape& getShape() { return _shape; };
+
+	int getLife() const { return _life; };
+	void decreaseLife() { _life -= 1; };
+
+private:
+	int _life = 10;
+	RectangleShape _shape;
+};