feat(babysitter): removed pixel_size; docs(bud_metric)

src/agora/utils/lineage.py

src/aliby/baby_client.py

src/aliby/baby_sitter.py

src/aliby/pipeline.py

src/postprocessor/core/lineageprocess.py

src/postprocessor/core/reshapers/bud_metric.py

src/postprocessor/core/reshapers/picker.py