add FIXME about configurable camera settings

src/renderer.cpp

@@ -201,6 +201,7 @@ static void zoom_camera(RenderState* render_state, float distance_delta) {
     Vector3 direction = Vector3Normalize(to_target);
     float camera_distance = Vector3Length(to_target);
 
+    // FIXME: min_distance, distance_delta, and 'angle_speed' should be configurable
     float min_distance = 0.1f;
     if (camera_distance - distance_delta <= min_distance) return;