Add model catalog with specifications for DA3 and MoGe-2 models

- Introduced ModelSpec dataclass to define model attributes.
- Added multiple models including DA3 Small, Base, Giant 1.1, Nested Giant Large 1.1, and MoGe-2 variants.
- Implemented functions to retrieve model details and metadata.
- Included BEN2 model specifications for background removal.

tests/test_pack.py

@@ -65,15 +65,20 @@ class PackTest(unittest.TestCase):
                 self.assertIn("server/da3.py", names)
                 self.assertNotIn("server/processing.py", names)
                 self.assertNotIn("server/progress.py", names)
-                self.assertIn("server/model_catalog.py", names)
+                self.assertIn("model_catalog.py", names)
                 self.assertIn("server/model_download.py", names)
                 self.assertIn("server/onnx_ben2.py", names)
                 self.assertIn("server/onnx_da3.py", names)
                 self.assertIn("server/onnx_moge2.py", names)
                 self.assertNotIn("server/jobs.py", names)
                 self.assertIn("server/__init__.py", names)
-                self.assertIn("blendjob/environment.py", names)
-                self.assertIn("blendjob/installer/environment.py", names)
+                self.assertIn(
+                    "wheels/blendjob-0.1.5-py3-none-any.whl",
+                    names,
+                )
+                self.assertFalse(
+                    any(name.startswith("blendjob/") for name in names)
+                )
                 self.assertNotIn("install_env.py", names)
                 self.assertNotIn("snapform/__init__.py", names)
                 self.assertNotIn("importer.py", names)