Implement optional update coordinator to call `refreshState` periodically

[iMicknl]

Is your feature request related to a problem? Please describe. When we move towards using an event based approach for updating states (#1), it would be good to understand if we need to refresh the states manually for specific devices, or if we can do it in batch.

For example;

• io:DiscreteGateOpenerIOComponent uses refreshPedestrianPosition (#40)
• io:SimpleExteriorHeatingIOComponent uses getLevel possibly (#161) and there are more examples
• eliot:OnOffLightEliotComponent uses refreshAllLightStates (#230)

Describe the solution you'd like Getting rid of manually calling all refresh endpoints would be best, or scheduling a refresh of all states periodically.

Describe alternatives you've considered Maintaining a list of states that have to be refreshed manually.

[iMicknl]

Just found a reference to stateRefreshCommand in https://www.tahomalink.com/enduser-mobile-web/steer-html5-client/vendor/somfy/io/alarm/alarm.js. Is worthwhile to investigate.

stateRefreshCommand: {commands: "refreshState", label: i18n.refreshState},

[iMicknl]

https://github.com/dubocr/homebridge-tahoma/blob/984a8e440e081a3f34960a0303bcbda245f60de6/overkiz-api.js#L407

The HomeKit (via homebridge) integration is also calling this endpoint every x minutes (based on user setting). We could add this as well, next to our regular data update coordinator.

[tetienne]

What about doing this automatically if we detect a device required it ?

[iMicknl]

What about doing this automatically if we detect a device required it ?

I had the same thought this morning, would make a lot of sense. Just enable this for the devices where we require it and don't make it user configurable.