Fix#2616
This PR adds a new sort option for exclusive labels.
For exclusive labels, a new property is exposed called "order", while in
the UI options are populated automatically in the `Sort` column (see
screenshot below) for each exclusive label scope.
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Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
Extract from #11669 and enhancement to #22585 to support exclusive
scoped labels in label templates
* Move label template functionality to label module
* Fix handling of color codes
* Add Advanced label template