Add image perspective editing and related tools

- Implemented the Image Perspective tool for editing image corners in Blender.
- Created a new operator `EditImagePerspective` to handle the perspective transformation.
- Added a preview feature for the perspective adjustment.
- Introduced the `ImagePolylineTool` for editing image masks with polylines.
- Developed backend support for Real-ESRGAN model inference, including ONNX integration.
- Added functionality for image masking and background removal.
- Created unit tests for the Real-ESRGAN ONNX model to ensure correct preprocessing and inference.

sync_models.py

@@ -22,11 +22,11 @@ class ModelFile:
     size: int
     sha256: str
     sources: tuple[str, ...]
+    filename: str = "model.onnx"
 
     @property
     def destination(self):
-        filename = "model_fp16.onnx" if self.folder.endswith("/onnx") else "model.onnx"
-        return MODELS_DIR / self.folder / filename
+        return MODELS_DIR / self.folder / self.filename
 
 
 def hf_url(repository, filename):
@@ -58,6 +58,23 @@ MODEL_FILES = (
             hf_url("onnx-community/BEN2-ONNX", "onnx/model_fp16.onnx"),
             r2_url("BEN2-ONNX", "onnx/model_fp16.onnx"),
         ),
+        "model_fp16.onnx",
+    ),
+    ModelFile(
+        "realesr-general-x4v3",
+        4866396,
+        "924ebad6532777303582d4ce7811849b88869231a3ae7093e0f21200249df8d5",
+        (
+            hf_url(
+                "jonathanst29/tinier-upscale-models",
+                "realesr-general-x4v3.onnx",
+            ),
+            r2_url(
+                "realesr-general-x4v3",
+                "realesr-general-x4v3.onnx",
+            ),
+        ),
+        "realesr-general-x4v3.onnx",
     ),
     ModelFile(
         "moge-2-vits-normal-onnx",