The enhancement of mnt-groupscan

[Paiiimannnoitla]

This function now can only restore the missing data of Groups.db by scan if there is non-recorded monitored groups db.
I want to add a feature that create a missing monitored groups db but "recorded" in Groups.db in partially or fully recreation.
So the concept is below:

1. Can restore children groups data by read children column in Groups.db
2. Can restore all the children chain data by compare with parent column and children column in Groups.db
3. Cannot restore monitored data(The path of Stemmeta.db) because they are stored in monitored groups db

If I want to realize this function, the addition function or monitored groups storage structure remastered is a must-be. However, this is not priority function and will be focused developing in further branch ,so I leave a issue here.