feat: Add new Geometry Nodes groups for image relief and shadeless shader

- Implemented the "O Image Relief Plane" Geometry Nodes group to create a fixed-base image relief using depth images and various parameters.
- Created the "O Shadeless" shader node group to display color without scene lighting while preserving shadows and reflections.
- Introduced a preview feature for node groups, allowing for interactive visualization of node arrangements in an HTML format.
- Added a template HTML file for rendering node previews with customizable views and controls.

tests/test_node_asset_launcher.py

@@ -5,7 +5,7 @@ import pytest
 
 
 PROJECT_ROOT = Path(__file__).resolve().parents[1]
-SCRIPT_PATH = PROJECT_ROOT / "tools" / "build_node.py"
+SCRIPT_PATH = PROJECT_ROOT / "tools" / "nodes" / "cli.py"
 
 
 def load_launcher():
@@ -82,11 +82,8 @@ def test_launcher_runs_asset_build_and_validations_before_tests(monkeypatch, tmp
 
     launcher.main()
 
-    scripts = [Path(command[-1]) for command in calls[:-1]]
-    assert [path.name for path in scripts] == [
-        "asset_library.py", "asset_validation.py",
-        "image_plane_validation.py", "cutout_validation.py",
-    ]
-    assert all(path.is_file() for path in scripts)
-    assert all(command[1:4] == ("--factory-startup", "--background", "--python") for command in calls[:-1])
+    assert len(calls) == 3
+    assert "runpy.run_module('tools.nodes.build', run_name='__main__')" in calls[0][-1]
+    assert "runpy.run_module('tools.nodes.check', run_name='__main__')" in calls[1][-1]
+    assert all(command[1:6] == ("--factory-startup", "--background", "--python-exit-code", "1", "--python-expr") for command in calls[:-1])
     assert calls[-1][1:] == ("-m", "pytest")