Kanban (#393)

Fix tests

Add error docs

Add swagger docs for bucket endpoints

Add integration tests

Fix tests

Fix err shadow

Make sure a bucket and a task belong to the same list when adding or updating a task

Add tests

Add getting users of a bucket

Fix log level when testing

Fix lint

Add migration for buckets

Cleanup/Comments/Reorganization

Add Kanban bucket handling

Co-authored-by: kolaente <k@knt.li>
Reviewed-on: https://kolaente.dev/vikunja/api/pulls/393

pkg/db/test.go

@@ -46,7 +46,7 @@ func CreateTestEngine() (engine *xorm.Engine, err error) {
 	}
 
 	engine.SetMapper(core.GonicMapper{})
-	logger := log.NewXormLogger()
+	logger := log.NewXormLogger("DEBUG")
 	logger.ShowSQL(os.Getenv("UNIT_TESTS_VERBOSE") == "1")
 	engine.SetLogger(logger)
 	x = engine