change 'delete_previous' to 'overwrite_previous'

...osquito_escapes/preprocessing_settings-sample_binned.yaml

data/mosquito_escapes/preprocessing_settings-selection.yaml

process/batch_processing.py

process/dlc_postprocessing.py

process/processes.yaml

scripts/process_all_escapes.py

scripts/process_all_escapes_strobe.py

scripts/process_selection.py

tests/test_process_batch.py

utils/settings.py