Copy existing issues to the target project.
The plug-in operation steps are as follows：
Install and start the application;
In the "Create Custom Field" section of the custom field menu, add a new field type named "Casecade Custom Field Type".
After selecting this type to create a field, a three-level cascading field is created that can edit the field context. Due to system limitations, editing default values is not currently supported.
This field can be configured to display on the issue screen.
