[CS 598] Add Bonn EEG dataset/task

[ravi14il]

Contribution Type: Dataset and Task Net ID: ravi14

Description: Adding the Bonn EEG dataset that was used in the paper I was reproducing (Known as Epilepsy in the paper). This is used to validate the model's robustness in domain transfer when pretrained on Sleep EEG (SleepEDF) Dataset which is already in Pyhealth.

This dataset was also a test of trying to use the BaseDataset to load raw signal data that is not associated with patients/events along with streaming the data during the task.

Paper: Multi-View Contrastive Learning for Robust Domain Adaptation in Medical Time Series Analysis Paper Link: https://arxiv.org/abs/2506.22393 Dataset Paper Link: https://www.upf.edu/documents/229517819/232450661/Andrzejak-PhysicalReviewE2001.pdf/0e9a54b8-8993-b400-743e-4d64fa29fb63

Dataset: BonnEEGDataset Task: BonnEEGSeizureDetection Test: TestBonnEEGDataset