Add tools and tests for AnyImage model management and documentation

- Implement sync_models.py for preparing and uploading ONNX artifacts.
- Create build_node.py for building and validating Blender scripts.
- Add docs.py for building and previewing documentation with Mike or MkDocs.
- Introduce model_exports.py for exporting PyTorch models to ONNX format.
- Develop pack.py for packaging the project with dependencies for different platforms.
- Add test_sync_models.py to validate sync_models functionality.
- Add test_tool_commands.py to ensure repository tools have correct command scripts.
- Initialize tools package with __init__.py.

src/anyimage/operators/convert_to_plane/object.py

@@ -2,26 +2,29 @@
 
 import bpy
 
-from ..common.image_data import (
+from ...common.image_data import (
     color_data_name,
     image_empty_bounds,
     image_pixels,
     load_color_result_image,
     require_image_empty,
 )
-from ..common.depth_data import (
+from ...common.depth_data import (
     depth_uniform_scale,
     load_depth_metadata,
     load_depth_result_image,
 )
-from ..common.mesh_result import (
+from ...common.object import (
     create_image_material,
     finalize_object_result,
     modifier_input_identifier,
     set_modifier_input,
 )
+from ...common.node import load_node_group
 from .mesh_plane import create_mesh_plane_mesh, create_mesh_plane_object
-from .nodes import depth_plane_node_group
+
+
+DEPTH_PLANE_NODE_GROUP_NAME = "O Image Depth Plane"
 
 
 def create_color_image(source_object):
@@ -71,7 +74,7 @@ def create_depth_plane_object(
     plane.matrix_world = source_object.matrix_world.copy()
     plane["anyimage_mesh_shape"] = "DEPTH_PLANE"
 
-    node_group = depth_plane_node_group()
+    node_group = load_node_group(DEPTH_PLANE_NODE_GROUP_NAME)
     modifier = plane.modifiers.new(name=node_group.name, type="NODES")
     modifier.node_group = node_group
     modifier.show_group_selector = False