[Task]: Property pane for Sections to Add/Remove Zones

[marks0351]

Add Stepper Control on Sections to Add/Remove Zones

• Add property pane config for number of zones of a section.
• Create new stepper control from Maps zoom control
  • Set Min Limit as 1 and Max limit as 4 zones per section
  • Manually entry should be restricted only allow stepper changes
• Move widgets to previous zone when a zone is removed
  • Remove the last zone in the section.
  • Add sagas to move widgets to the previous zone when parent zone is removed
• Add empty zone when a zone is added from property pane

[marks0351]

cc: @somangshu @riodeuno