* feat: Checkbox group should have a select all option
-- Add a new property, isSelectAll
-- Implement its functionality
* feat: Checkbox group should have a select all option
-- Set height to auto for select all control
-- Move isInline and isSelectAll properties below isDisabled
-- Set color for options to GREY_9 and GREY_10
-- Add Cypress test cases for handleSelectAllChange
* feat: Checkbox group should have a select all option
-- Fix on misalignment of select all control if isInline is true
-- Refactor the cypress test cases which is affected by adding select all control
* feat: Checkbox group should have a select all option
-- Set white-space to nowrap
* feat: Checkbox group widget should have a select all option
-- Change helpText for isSelectAll property
* feat: Checkbox group should have a select all option
-- Fix on broken test cases for the select all option
Co-authored-by: Arpit Mohan <arpit@appsmith.com>
