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/cutout_tool/object.py

@@ -4,19 +4,19 @@ from enum import StrEnum
 
 import bpy
 
-from ..common.image_data import (
+from ...common.image_data import (
     color_data_name,
     image_rgba,
 )
-from ..common.depth_data import camera_depth_values, depth_uniform_scale
-from ..common.mesh_result import (
+from ...common.depth_data import camera_depth_values, depth_uniform_scale
+from ...common.object import (
     IMAGE_MATERIAL_NODE_GROUP_NAME,
     create_image_material,
     finalize_object_result,
-    load_asset_node_group,
     modifier_input_identifier,
     set_modifier_input,
 )
+from ...common.node import load_node_group
 from .geometry import (
     DEFAULT_DEPTH_BASELINE,
     DEFAULT_DEPTH_DIRECTION,
@@ -123,7 +123,7 @@ def _cropped_color_image(source_object, region_mask, source_rgba):
 
 
 def load_cutout_node_group():
-    return load_asset_node_group(CUTOUT_NODE_GROUP_NAME)
+    return load_node_group(CUTOUT_NODE_GROUP_NAME)
 
 
 def _connect_balloon_normal_scale(material):