Feature: Data Type Copy Action (#653)

* add copy data source

* add copy repo

* add copy logic to mock db

* add copy request interceptor

* add data type copy server data source

* add copy method to data type repo

* add data type copy entity action

* show copied notification

* update hasChildren flag

* use correct icon

* note

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Co-authored-by: Niels Lyngsø <niels.lyngso@gmail.com>
Co-authored-by: Niels Lyngsø <nsl@umbraco.dk>

src/Umbraco.Web.UI.Client/libs/repository/data-source/index.ts

@@ -4,3 +4,4 @@ export * from './folder-data-source.interface';
 export * from './tree-data-source.interface';
 export * from './item-data-source.interface';
 export * from './move-data-source.interface';
+export * from './copy-data-source.interface';