Issue #40: /energy/ailevel/vs/0 was unbound on a plain washer. The
capability already existed for fridges but was gated off entirely on
single-level hardware (the common case), so it's moved to common.py
(cross-family, like fridge + washer now) and split into two entities:
a switch when supportedAiLevel has exactly one entry (aiLevel is really
just an on/off toggle there), and a select otherwise, with '0' (off)
synthesized back into the select's options since supportedAiLevel never
lists it but it's a real observed value.
Also drops the translation_key/strings.json entries -- aiLevel's raw
digit values already render fine untranslated, and translating a
handful of levels can't cover devices with more.
Marc Billow
d6639c99d4