added floating camera

src/camera/Floating_Camera.cpp

@@ -0,0 +1,8 @@
+#include "camera/Floating_Camera.hpp"
+
+FloatingCamera::FloatingCamera(float fov, float width, float height) : FPSCamera(fov, width, height) {
+}
+
+void FloatingCamera::moveUp(float amount) {
+    translate(up * amount);
+}