Sitemap editor: implement color temperature picker

[mherwege]

Closes: #2852 (comment)

Related to: openhab/openhab-core#3891

This PR implements configuring a color temperature picker in the sitemap builder UI.

It also does some visualisation improvements of names and labels (by defaults shows item label in treeview, analogous to model treeview).

[relativeci]

#2498 Bundle Size — 10.87MiB (+0.02%).

800c925(current) vs 7c3d114 main#2496(baseline)

Warning

Bundle contains 2 duplicate packages – View duplicate packages

Bundle metrics   4 changes 2 regressions

	Current #2498	Baseline #2496
Initial JS	1.91MiB(+0.34%)	1.91MiB
Initial CSS	577.48KiB(+0.03%)	577.31KiB
Cache Invalidation	22.98%	17.59%
Chunks	226	226
Assets	249	249
Modules	2942(+0.07%)	2940
Duplicate Modules	152	152
Duplicate Code	1.8%	1.8%
Packages	96	96
Duplicate Packages	2	2

Bundle size by type   2 changes 2 regressions

	Current #2498	Baseline #2496
JS	9.08MiB (+0.02%)	9.08MiB
CSS	864.45KiB (+0.05%)	864KiB
Fonts	526.1KiB	526.1KiB
Media	295.6KiB	295.6KiB
IMG	140.74KiB	140.74KiB
HTML	1.38KiB	1.38KiB
Other	871B	871B

Bundle analysis report Branch mherwege:colortemperaturepicker Project dashboard

---

^{Generated by RelativeCI Documentation Report issue}