feat: migration from onnx to pytorch script

[nassarofficial]

LayoutPredict migration to torch instead of onnxruntime to reduce dependencies and expand compatibility.

1. Removed onnxruntime from poetry dependencies
2. Updated test to reflect the new changes
3. New checkpoint loads from HF artefacts

Checklist:

• [x] Commit Message Formatting: Commit titles and messages follow guidelines in the conventional commits.
• [x] Documentation has been updated, if necessary.
• [x] Examples have been added, if necessary.
• [x] Tests have been added, if necessary.