🤖 - Visual Style Generator Tool to simplify custom theme creation and visual preview result

[anatoly-spb]

Description

This feature request has been inspired by https://ionicframework.com/docs/theming/color-generator which allows to create custom theme and show result.

The request assumes:

• decrease current variables set (variables.less) to make base variable set, which must simplify custom theme creation process.
• create ui style generator tool which allows to make change in base variable set and show how it influences on taiga-ui components

Thank you.

[splincode]

https://taiga-family.github.io/taiga-lumbermill/theme