Refactor and clean up codebase by removing unused functions and reorganizing imports

- Removed unused model keys and functions from properties.py.
- Deleted projection.py as its functions were no longer needed.
- Cleaned up model_catalog.py by removing unused model directory function.
- Updated imports in various test files to reflect new module structure.
- Removed deprecated test cases related to image editing tools.
- Added new tests for ONNX runtime provider selection logic.

src/anyimage/properties.py

@@ -9,8 +9,6 @@ from .server import model_catalog as shared_model_catalog
 
 BEN2_MODEL_KEY = "BEN2_BASE"
 REALESRGAN_GENERAL_WDN_MODEL_KEY = shared_model_catalog.DEFAULT_UPSCALE_MODEL_KEY
-SAFMN_MODEL_KEY = shared_model_catalog.SAFMN_MODEL.key
-REALESRGAN_X4PLUS_MODEL_KEY = shared_model_catalog.REALESRGAN_X4PLUS.key
 DEFAULT_MOGE2_MODEL_KEY = "MOGE2_VITS_NORMAL"
 REQUIRED_MODEL_KEYS = (
     DEFAULT_MOGE2_MODEL_KEY,
@@ -85,10 +83,6 @@ def model_ready(model_key):
     )
 
 
-def required_models_ready():
-    return not ai_status()["missing_models"]
-
-
 def ai_status():
     environment_ready = runtime.environment_ready()
     ready_models = {model["key"] for model in model_catalog() if model.get("ready")}