Create parkside_PBBA_smart_water_timer.yaml (#5472)
* Create parkside_PBBA_smart_water_timer.yaml
* Update parkside_PBBA_smart_water_timer.yaml
Removed trailing spaces
* fix(parkside_pbba1_watertimer): follow convention
- File naming convention - lowercase, grouped as brand_model_type
- HA naming convention - only first word capitalised
- Keep device name short for when it is prepended to entities
- use valve entity for valve (was already implied by class: water)
- use time entity for 24h timer
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Co-authored-by: Jason Rumney <make-all@users.noreply.github.com>