VRM Added, Import Anything chages.

- Added VRM to the list of files able to be imported.
- Added error handling for missing vrm importer, will popup to the user telling them to download vrm addon.
- Removed automatically url opening as we should have user consent to open a url, automatic url opening goes against blenders best practices and can be a security concern.
- Optimised the way we import multiple models, the old way just added unnecessary complexity, The try-except block was used to iterate over self.files and set is_multi to True if no exception occurs. However, this is an unnecessarily complex way to determine if the list is non-empty. Simply checking the length of the list is more straightforward and efficient. The way we were using the try-except box could of also lead to silent failures which is not user friendly.

core/importer.py

@@ -40,6 +40,7 @@ import_types: dict[str, typing.Callable[[str, list[dict[str,str]], str], None]]
     "x3d": (lambda directory, files, filepath : bpy.ops.import_scene.x3d(files=files, directory=directory, filepath=filepath)),
     "wrl": (lambda directory, files, filepath : bpy.ops.import_scene.x3d(files=files, directory=directory, filepath=filepath)),
     "vmd": (lambda directory, files, filepath : import_multi_files(directory=directory, files=files, filepath=filepath, method = (lambda directory, filepath: bpy.ops.tuxedo.import_mmd_animation(directory=directory, filepath=filepath)))),
+    "vrm": (lambda directory, files, filepath: bpy.ops.import_scene.vrm(filepath=filepath)),
     "pmx": (lambda directory, files, filepath : import_pmx(filepath)),
     "pmd": (lambda directory, files, filepath : import_pmd(filepath)),
 }