feat: Add MoGe-2 surface generation and export functionality

- Introduced new enum items for depth plane and surface models with caching.
- Added MOGE2_MESH_JOB to operators for converting images to surfaces.
- Implemented surface mesh building and exporting in RunJob operator.
- Enhanced UI to include export format options for MoGe-2.
- Created validation tools for MoGe-2 surface assets and depth planes.
- Updated geometry nodes to support new surface generation features.
- Refactored existing tests to accommodate new functionality and ensure stability.

tools/validate_moge_depth_plane.py

@@ -72,6 +72,21 @@ def main():
     material_group = bpy.data.node_groups[MOGE_MATERIAL_NODE_GROUP_NAME]
     assert not any(node.bl_idname == "ShaderNodeNormalMap" for node in material_group.nodes)
     assert any(node.bl_idname == "ShaderNodeBump" for node in material_group.nodes)
+    material = plane.data.materials[0]
+    image_textures = [
+        node
+        for node in material.node_tree.nodes
+        if node.bl_idname == "ShaderNodeTexImage"
+    ]
+    assert image_textures
+    assert all(node.extension == "EXTEND" for node in image_textures)
+    geometry_textures = [
+        node
+        for node in geometry_group.nodes
+        if node.bl_idname == "GeometryNodeImageTexture"
+    ]
+    assert geometry_textures
+    assert all(node.extension == "EXTEND" for node in geometry_textures)
     print("MoGe-2 depth plane validation passed")