Add KEEP, RedDino extractors and fix Gigapath from #159

[mducducd]

• Adds new extractors and integrations: RED_DINO, TICON, and KEEP.
• Updates GigaPath encoder behavior (global pooling + coordinate handling for slide/patient embedding paths). GigaPath slide encoder: coordinate normalization collapses all tile positions to a 4×4 grid and missing global_pool=True #159
• Improves data-loading/performance paths (HDF5 handle caching, DataLoader settings, and several vectorization/speed improvements).
• Refines model/deploy behavior for survival handling and dtype robustness.
• Bumps package versioning to 2.5.0 and updates lock/metadata accordingly.