File not found error handling in loadModel method in GGUF.java

[dhruvarayasam]

• Added a more descriptive error message for when the file at the specified modelPath in GGUF.java does not exist in the loadModel method.
• Also added error handling if there was an issue loading in the particular model specified at modelPath.
• Both give more descriptive error messages that help the user understand better what went wrong in loading the model.
• Specified in Add Basic Error Handling for Missing Model Files #15

[CLAassistant]

All committers have signed the CLA.

[Copilot]

Pull Request Overview

This pull request enhances error handling for model loading by providing more descriptive error messages when a model file is not found or fails to load.

• Added a file existence check in the GGUF.loadModel method with a FileNotFoundException.
• Updated comments in ModelLoader.java clarifying thrown exceptions.
• Updated the TornadoVM subproject commit.

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
src/main/java/com/example/loader/weights/ModelLoader.java	Added clarifying comments regarding error types thrown during model loading.
src/main/java/com/example/core/model/GGUF.java	Introduced an explicit file existence check and improved error messages.
external/tornadovm	Updated the subproject commit.

[mikepapadim]

LGTM, thank you for your contribution