PUI Template editor (#6541)

* Added first POC for label editor

* Added preview item selection

* Split code

* Fix import

* Use liquid lang and added custom tooltips

* Auto load first item for preview and add BOM part assembly filter

* Make the save&reload action more obvious

* Make save optional and use server stored template

* Fix icons and inherit model url

* Add label/report extra fields to serializer and default templates

* Bump api version to v176

* Remove generic and pass template to editor

* Added error overlay

* Moved default tempaltes in default folder

* Only show detail drawer back button if necessary

* Rename action dropdown disabled to hidden and add loading disabled to template editor

* Fix types

* Add icons to editor/preview tabs

* Add draggable split pane and make editors use full height

* Add SplitButton component

* add code editor tag description

* fix related model field if empty string

* remove debug console.log

* move code editor/pdf preview into their own folder

* Update api_version.py

* add support for multiple editors

* fix template editor error handleing while loading/saving code

* add documentation for the template editor

docs/mkdocs.yml

@@ -135,6 +135,7 @@ nav:
     - Project Codes: order/project_codes.md
   - Report:
     - Templates: report/report.md
+    - Template Editor: report/template_editor.md
     - Report Types:
       - Test Reports: report/test.md
       - Build Order: report/build.md