@PostMapping("/selector")
    public ShenyuAdminResult saveSelector(@RequestBody @Valid @NotNull final DataPermissionDTO dataPermissionDTO) {
        return ShenyuAdminResult.success(ShenyuResultMessage.SAVE_SUCCESS, dataPermissionService.createSelector(dataPermissionDTO));
    }
create selector data permission.

@param dataPermissionDTO {@linkplain DataPermissionDTO}
@return effect rows count
shenyu-admin/src/main/java/org/apache/shenyu/admin/controller/DataPermissionController.java