* First Go at the single block property editor based on blocklistpropertyeditor
* Add simalar tests to the blocklist editor
Also check whether either block of configured blocks can be picked and used from a data perspective
* WIP singleblock Valiation tests
* Finished first full pass off SingleBlock validation testing
* Typos, Future test function
* Restore accidently removed file
* Introduce propertyValueConverter
* Comment updates
* Add singleBlock renderer
* Textual improvements
Comment improvements, remove licensing in file
* Update DataEditorCount by 1 as we introduced a new one
* Align test naming
* Add ignored singleblock default renderer
* Enable SingleBlock Property Indexing
* Enable Partial value merging
* Fix indentation
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Co-authored-by: kjac <kja@umbraco.dk>