api: rename --sao-lcu-bounds to --sao-non-deblock

The acronym LCU doesn't appear anywhere else in our param interface
sao: rename SaoLcuParam to SaoCtuParam
sao: rename saoLcuParam to ctuParam
sao: rename resetLcuPart to resetCtuPart
sao: nits
replace LCU with CTU globally in comments
replace lcu with ctu in variable names
analysis: nit
cli: display param->bSaoNonDeblocked as bool in CLI help