Add new node asset scripts for geometry and shader operations

- Implemented `build_mesh_plane.py` to create a geometry node group for mesh planes with customizable parameters.
- Created `build_shadeless.py` for a shader node group that displays color without scene lighting while preserving shadows and reflections.
- Added `validate.py` to validate the integrity of the newly created node groups and their inputs.
- Introduced `validate_cutout.py` to ensure the functionality of cutout node groups and their dependencies.
- Developed `validate_mesh_plane.py` to test the mesh plane creation and its modifier settings.

tools/node_assets/build.py

@@ -0,0 +1,49 @@
+from pathlib import Path
+import sys
+
+import bpy
+
+
+PROJECT_ROOT = Path(__file__).parents[2]
+sys.path.insert(0, str(Path(__file__).parent))
+sys.path.insert(0, str(PROJECT_ROOT / "src"))
+sys.path.insert(
+    0,
+    str(next((PROJECT_ROOT / "src" / "anyimage" / "wheels").glob("blendjob-*.whl"))),
+)
+
+from build_cutout import (
+    CUTOUT_NODE_GROUP_NAMES,
+    build_cutout_modifier_group,
+    build_node_group,
+)
+from build_mesh_plane import build_mesh_plane_group
+from build_shadeless import build_shadeless_group
+from anyimage.operators.common.node_graph import expand_smooth
+
+
+OUTPUT_PATH = (
+    PROJECT_ROOT
+    / "src"
+    / "anyimage"
+    / "assets"
+    / "O_AnyImage.blend"
+)
+
+
+def main():
+    bpy.ops.wm.read_factory_settings(use_empty=True)
+    bpy.context.preferences.filepaths.save_version = 0
+    build_mesh_plane_group()
+    build_shadeless_group()
+    shape_groups = {
+        shape: build_node_group(shape)
+        for shape in CUTOUT_NODE_GROUP_NAMES
+    }
+    build_cutout_modifier_group(shape_groups, expand_smooth)
+    OUTPUT_PATH.parent.mkdir(parents=True, exist_ok=True)
+    bpy.ops.wm.save_as_mainfile(filepath=str(OUTPUT_PATH), check_existing=False)
+
+
+if __name__ == "__main__":
+    main()