color palette creation helper

Changes for 1.60 - 2023-09-11

• = API development
• * added color spaces HSB HSW YIQ
• + output format array: ['rgb',1,2,3]
• + input and output format string: 'rgb: 1,2,3'
• + input and output format css_string: 'rgb(1,2,3)'
• - deprecated getter method string