fix: add requirements.txt for BYOL notebooks

[KanishqGandharv219]

Description

Adds missing requirements.txt file for BYOL notebooks to resolve dependency issues.

Problem

The BYOL notebooks in Deeplens_Self_Supervised_Learning_Yashwardhan_Deshmukh/byol_learning/notebooks/ use imageio and other dependencies, but there's no requirements file. This causes ModuleNotFoundError when users try to run the notebooks.

Solution

• Created requirements.txt in the byol_learning/ directory
• Listed all required dependencies including imageio, torch, torchvision, etc.
• Users can now install with: pip install -r requirements.txt

Testing

• Verified all dependencies are commonly used in the BYOL notebooks
• Followed standard Python requirements.txt format

Files Changed

• Added: Deeplens_Self_Supervised_Learning_Yashwardhan_Deshmukh/byol_learning/requirements.txt

[KanishqGandharv219]

This PR adds a requirements.txt for the BYOL notebooks in the DeepLense repository. A reproducible environment is important for running self‑supervised and unsupervised learning pipelines on strong gravitational lensing images, and this file ensures that new contributors can install all required dependencies in one step.