Fixes#3126
Added the option `allowOverrideNotification` to `weather.js`. This
allows the module to receive the `CURRENT_WEATHER_OVERRIDE`
notification. The expected payload for this notification is a
full/partial `weatherObject` that is used to supplement/replace the
existing `weatherObject` returned by whichever weather provider is in
use.
No visual changes.
First time contributing - let me know if I've missed something
🙂
---------
Co-authored-by: veeck <michael.veeck@nebenan.de>
