chore: add .gitignore file to exclude unnecessary files

- Include patterns for PyTorch, Python, virtual environments, IDEs, Jupyter Notebooks, training logs, data files, temporary files, and model-specific files.
- This helps maintain a clean repository by ignoring files that should not be tracked.

.gitignore

@@ -0,0 +1,76 @@
+# PyTorch
+*.pth
+*.pt
+*.pkl
+*.onnx
+*.bin
+
+# Python
+__pycache__/
+*.py[cod]
+*$py.class
+*.so
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+
+# Virtual Environment
+venv/
+env/
+ENV/
+.env
+.venv
+env.bak/
+venv.bak/
+
+# IDE
+.idea/
+.vscode/
+*.swp
+*.swo
+.DS_Store
+
+# Jupyter Notebook
+.ipynb_checkpoints
+*.ipynb
+
+# Training logs and outputs
+runs/
+logs/
+outputs/
+checkpoints/
+wandb/
+
+# Data
+data/
+datasets/
+*.csv
+*.json
+*.h5
+*.npy
+*.npz
+
+# Temporary files
+tmp/
+temp/
+*.log
+*.tmp
+
+# Model specific
+*.ckpt
+*.safetensors
+*.bin
+pretrained_weights/