Issue 50545 - Port dbgen.pl to dsctl
    
    Description:  Ported the main features to lib389 and added some other useful features:
    
                  Now there are several LDIFs that can be created:
    
                  - User LDIFs (different types)
                  - Group LDIFs
                  - COS LDIFs
                  - Role LDIFs
                  - Modification LDIFs
                  - Nested LDIFs
    
    Design Doc:  https://www.port389.org/docs/389ds/design/dbgen-design.html
    
    fixes: https://pagure.io/389-ds-base/issue/50545
    
    Reviewed by: firstyear & spichugi(Thanks!!)
    
    Fix various issue and improve ldif file validation
    
    Add summary of settings to output, and set the default location of user/nested LDIF to be in the server's LDIF directory