Feature request: allow updating 'fetch_interval' dynamically

[lbschenkel]

In order to minimize API calls and follow best practices to minimize requests, it would be great if this component exposed a way for the fetch interval to be changed dynamically, such as from an automation that stops or slows down fetching during the night.

Suggestions:

• expose fetch_interval as a separate number entity; or
• allow fetch_interval in the config to be the name of an existing entity (like a template sensor or an input number)
• make update_interval<=0 to mean: stop updating completely

[TekniskSupport]

I'm sorry for the late response, this is a great request!
Thank you!

Will absolutely have a go at implementing it in one way or another