Duplicate Lists (#603)

Fix buckets not being duplicated correctly

Fix list id param not working

Add api endpoint

Add swagger docs

Add comment about test

Make duplicating actually work

Add copying link shares

Add copying list backgrounds

Add copying task relations

Add copying task comments

Add copying assignees

Add copying task task label relations

Add copying task attachments

Add duplicating tasks

Add basic struct and methods

Co-authored-by: kolaente <k@knt.li>
Reviewed-on: https://kolaente.dev/vikunja/api/pulls/603

pkg/routes/routes.go

@@ -304,6 +304,13 @@ func registerAPIRoutes(a *echo.Group) {
 	a.POST("/lists/:list/buckets/:bucket", kanbanBucketHandler.UpdateWeb)
 	a.DELETE("/lists/:list/buckets/:bucket", kanbanBucketHandler.DeleteWeb)
 
+	listDuplicateHandler := &handler.WebHandler{
+		EmptyStruct: func() handler.CObject {
+			return &models.ListDuplicate{}
+		},
+	}
+	a.PUT("/lists/:listid/duplicate", listDuplicateHandler.CreateWeb)
+
 	taskHandler := &handler.WebHandler{
 		EmptyStruct: func() handler.CObject {
 			return &models.Task{}