Updates Splitters and Video Splitting example

docs/examples/video-splitter.ipynb

semantic_router/encoders/vit.py

semantic_router/index/base.py

semantic_router/index/local.py

semantic_router/index/pinecone.py

semantic_router/layer.py

semantic_router/schema.py

semantic_router/splitters/base.py

semantic_router/splitters/consecutive_sim.py

tests/unit/encoders/test_vit.py

tests/unit/test_layer.py