Adds cycles-until-due and last-cleaned sensors decoded from the same
options[] array the course selector already reads (DrumCleanProposal_N -
WashingTimes_N for cycles remaining, DrumCleanLog_<iso> for last-cleaned),
verified byte-for-byte against a live app screenshot ("Potreba cistenia po
37 cykloch" / "Naposledy cistene pred 10 dnami").
Course selection is now a writable select entity sourced from each
device's own x.com.samsung.da.editCourseList (via a new options-as-callable
form on SelectDesc, reading the coordinator's full resource snapshot
instead of just the entity's own href), rather than a hardcoded course
table baked into Python. A MostUsed_ field on the same resource was
considered as a fallback but rejected after byte-level analysis showed it
doesn't reliably encode a course list. When a device never populates
editCourseList, the selector isn't created at all (exists_fn now takes
(rep, resources) to check a sibling href, matching the existing
match_fn(rep, resources) pattern).
Display names moved out of Python into strings.json/translations under
entity.select.{washer,dishwasher}_cycle.state.*, matching this
integration's existing translation_key convention (fridge.py's ice_type,
flex_zone_mode, etc.) instead of hardcoding English names in code.
Marc Billow