feat: Implement upscale functionality with ONNX models

- Added upscale operator to handle image upscaling by 4x using AI models.
- Introduced new jobs for upscale processing in the server, including debug and standard upscale jobs.
- Created a new ONNX model handler for upscale operations, supporting tiled inference and resource management.
- Updated tests to cover new upscale functionality, including input validation and output verification.
- Added documentation for the upscale feature, detailing usage and model options.

src/anyimage/__init__.py

@@ -21,8 +21,8 @@ from .panel import (
     Da3OutputDebugPanel,
     DebugPanel,
     Moge2ApiDebugPanel,
-    RealesrganGeneralX4v3DebugPanel,
     ServerPanel,
+    UpscaleDebugPanel,
 )
 
 
@@ -37,7 +37,7 @@ CLASSES = (
     Moge2ApiDebugPanel,
     Da3OutputDebugPanel,
     Ben2RemovalDebugPanel,
-    RealesrganGeneralX4v3DebugPanel,
+    UpscaleDebugPanel,
 )
 
 
@@ -72,8 +72,11 @@ def register():
     bpy.types.Scene.anyimage_settings = bpy.props.PointerProperty(
         type=AnyImageSettings,
     )
-    bpy.types.VIEW3D_MT_object_context_menu.append(draw_image_context_menu)
-    bpy.types.OUTLINER_MT_object.append(draw_image_context_menu)
+    bpy.types.Image.anyimage_upscale_source = bpy.props.PointerProperty(
+        type=bpy.types.Image,
+    )
+    bpy.types.VIEW3D_MT_object_context_menu.prepend(draw_image_context_menu)
+    bpy.types.OUTLINER_MT_object.prepend(draw_image_context_menu)
     clipboard_image.register_keymaps()
     runtime.register()
 
@@ -91,5 +94,7 @@ def unregister():
     bpy.types.OUTLINER_MT_object.remove(draw_image_context_menu)
     if hasattr(bpy.types.Scene, "anyimage_settings"):
         del bpy.types.Scene.anyimage_settings
+    if hasattr(bpy.types.Image, "anyimage_upscale_source"):
+        del bpy.types.Image.anyimage_upscale_source
     for class_type in reversed(CLASSES):
         bpy.utils.unregister_class(class_type)