New Scancycle management

• [ ] Add option in menu to manage scancycles
• [ ] Add page to edit (CRUD) scancycles
• [ ] Add column to activate/deactivate a cycle
• [ ] Devices: scancycle dropdown list -> select scancycles from table
• [ ] Add column to define net/mask to scan
• [ ] Add column to scan options
• [ ] Explain net/mask scan process
• [ ] Check time spent during scans