Scene in memory persistance and debug tools (#24)

![image](https://github.com/storytold/storyteller-bevy/assets/10954133/10eb5c33-2154-4e9d-95ce-1d8e8b822d22)
Debug tools example

---------

Co-authored-by: Danny McGee <dannymcgee@gmail.com>

studio/src/interaction/gizmos/camera.rs

@@ -3,13 +3,14 @@ use bevy::{
     prelude::*,
     render::view::RenderLayers,
 };
+use space_editor::space_editor_ui::NotShowCamera;
 
 use crate::MainCamera;
 
 use super::GIZMO_RENDER_LAYER;
 
 #[derive(Component)]
-pub(super) struct GizmoCamera;
+pub struct GizmoCamera;
 
 pub(super) fn spawn_gizmo_camera(
     mut cmd: Commands,
@@ -35,6 +36,22 @@ pub(super) fn spawn_gizmo_camera(
             },
             RenderLayers::layer(GIZMO_RENDER_LAYER),
             Fxaa::default(),
+            NotShowCamera,
         ));
     });
 }
+
+pub(super) fn sync_gizmo_and_main_cameras(
+    q_main_camera: Query<&Camera, (With<MainCamera>, Without<GizmoCamera>)>,
+    mut q_gizmo_camera: Query<&mut Camera, (With<GizmoCamera>, Without<MainCamera>)>,
+) {
+    let Ok(main_cam) = q_main_camera.get_single() else {
+        return;
+    };
+
+    let Ok(mut gizmo_cam) = q_gizmo_camera.get_single_mut() else {
+        return;
+    };
+
+    gizmo_cam.viewport = main_cam.viewport.clone();
+}

studio/src/interaction/gizmos/mod.rs

@@ -13,7 +13,7 @@ use self::{
 
 use super::{Selection, TransformMode, TransformType};
 
-mod camera;
+pub mod camera;
 mod combo;
 mod common;
 mod resources;
@@ -62,6 +62,10 @@ impl Plugin for GizmoPlugin {
                 normalize_gizmo_scale.after(CameraMotionSystem),
             ),
         );
+
+        //sync camera viewports
+        app.add_systems(Update, camera::sync_gizmo_and_main_cameras);
+
         app.add_systems(
             PostUpdate,
             update_ss_ring_rotation.after(TransformSystem::TransformPropagate),
@@ -139,10 +143,10 @@ fn spawn_gizmo(
 
 fn sync_gizmo_transform(
     mut cmd: Commands,
-    mut q_gizmo: Query<(&mut Transform, &TransformGizmo)>,
+    mut q_gizmo: Query<(Entity, &mut Transform, &TransformGizmo)>,
     q_targets: Query<&GlobalTransform>,
 ) {
-    for (mut transform, gizmo) in q_gizmo.iter_mut() {
+    for (ent, mut transform, gizmo) in q_gizmo.iter_mut() {
         if let Ok(target) = q_targets.get(gizmo.target) {
             match gizmo.transform_space {
                 super::TransformSpace::Local => {
@@ -155,7 +159,7 @@ fn sync_gizmo_transform(
                 }
             }
         } else {
-            cmd.entity(gizmo.target).despawn_recursive();
+            cmd.entity(ent).despawn_recursive();
         }
     }
 }