[refactor] refactor load3d (#5765)

Summary

Fully Refactored the Load3D module to improve architecture and
maintainability by consolidating functionality into a
centralized composable pattern and simplifying component structure. and
support VueNodes system

  Changes

- Architecture: Introduced new useLoad3d composable to centralize 3D
loading logic and state
  management
- Component Simplification: Removed redundant components
(Load3DAnimation.vue, Load3DAnimationScene.vue,
  PreviewManager.ts) 
- Support VueNodes
- improve config store
- remove lineart output due Animation doesnot support it, may add it
back later
- remove Preview screen and keep scene in fixed ratio in load3d (not
affect preview3d)
- improve record video feature which will already record video by same
ratio as scene
Need BE change https://github.com/comfyanonymous/ComfyUI/pull/10025


https://github.com/user-attachments/assets/9e038729-84a0-45ad-b0f2-11c57d7e0c9a



┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-5765-refactor-refactor-load3d-2796d73d365081728297cc486e2e9052)
by [Unito](https://www.unito.io)

src/schemas/apiSchema.ts

@@ -482,7 +482,6 @@ const zSettings = z.object({
   'Comfy.MaskEditor.BrushAdjustmentSpeed': z.number(),
   'Comfy.MaskEditor.UseDominantAxis': z.boolean(),
   'Comfy.Load3D.ShowGrid': z.boolean(),
-  'Comfy.Load3D.ShowPreview': z.boolean(),
   'Comfy.Load3D.BackgroundColor': z.string(),
   'Comfy.Load3D.LightIntensity': z.number(),
   'Comfy.Load3D.LightIntensityMaximum': z.number(),