Add AtmosC A Series air purifier (#5350)
* Add AtmosC A Series air purifier
* Update and rename atmosc_a_series.yaml to Apply review feedback and move file to devices directory
Apply review feedback and move file to devices directory
* fix(atmosc_aseries_airpurifier): follow naming conventions
- follow HA convention for device naming
- follow this project's convention for file names, so the type of device is obvious to other users trying to match compatible but different branded devices.
* Update speed values and preset mode mappings
Speed is expected to be in the range 0-100 when it reaches HA.
Since we are mapping discrete values here, we should map directly to the end values.
Trim unnecessary quotes from preset strings
---------
Co-authored-by: Jason Rumney <make-all@users.noreply.github.com>