[FR]: Allow entity_picture to become optional

[henriklund]

Describe the feature you wish to make a request for

Would it be possible to omit entity_picture as an attribute, or have it changed to a reference?

Describe alternatives you've considered

This could either be done through an option in the integration configuration (thus making it optional) or by placing the images in a library on disk (or even both).

Additional context

Reasons are:
a) it does not seem right to include static UI elements as entity attributes
b) removal would eliminate space used in the database(s) storing (what I assume are static) images.

Reg. (b), my observation is that approx. 0,2MB is used per day for storing attributes for the five sensor.affalddk* entities (this is just based on the two days I've had the integration installed). While it does not amount to much, even in one year, and while I could tinker this away by fiddling with the recorder setting in configuration.yaml and do some Influx foo, I still think that maybe it is worth considering if these images belong in their raw form in the attributes in the first place.

Aside from that; nice initiative! Now I can drop my manually updated calendar :)

[briis]

Yes it would be possible. The thing is, that a lot of people like the pictures, so I would most likely make some happy, and some unhappy.
I need to think about a technical way to make this optional.