ZCLDB Level Control cluster fixes, IKEA scene attribute
ZCLDB Level Control cluster fixes, IKEA scene attribute

* Use proper hex values;
* Add IKEA specific scene attribute in groups cluster
dresden-elektronik/deconz-rest-plugin,dresden-elektronik/deconz-rest-plugin,dresden-elektronik/deconz-rest-plugin,dresden-elektronik/deconz-rest-plugin,dresden-elektronik/deconz-rest-plugin