Fix IKEA KADRILJ and FYRTUR roller blind reporting

[manup]

The reporting could stop when the device rejoins the network for various reasons like parent loss or transmission errors.

This PR:

• Marks KADRIL and FYRTUR roller blinds as light sleeper with the new non public ResourceItem "attr/sleeper" (borrowed from Device code);
• Support polling light sleeper Window Covering devices state.lift while reporting isn't setup;
• Fix window covering update by ZCL report / read attributes value (was always set to by report);
• Fix reconfiguration of window covering bindings and ZCL reporting.

Issue: #1121

[ebaauw]

I only have the FYRTUR, but I understand the FYRTUR and KADRILJ are the same Zigbee device, with the same firmware, except for the Model Identifier and the Product Code.

Same logic might be opportune for the Aqara B1.

[manup]

Cool, thanks I've extended the PR to handle both.

[zigomatichub]

Hello, I don't know if this is the right place to post.
About the FYRTUR, in deconz application, on the cluster info in container Window Covering of the node, the value Current Position Lift Percentage is not updated after executing a exec command.
Is it possible to expose the reported position value in home assistant as an entity and having then refreshed correctly ?