Store daily raw images instead of all of them

[pgrm]

Great product, setup of the water meter was straightforward. Currently, I'm exporting the data to HA, but I'd like to keep once a day a raw image on the device for potential sanity checks in the future.

I understand the current config only allows keeping all the images or none of them. Instead, I'd like the option to keep a daily image. I don't really care when it was taken, and in case the info is only stored in memory and after a reboot it keeps another image, I'd be fine with that as well.

[caco3]

Duplicate of #3326