feat: create base component for theme page and them sections

feat: base types and logic

feat: basic palette in colors tab

feat: CRUD for basic palette

fix: palette tokens order

feat: add private colors generator

feat: add main settings

feat: private color select and advanced brand palette

feat: advanced mode switch

feat: improve private color editor

fix: styles of form row

feat: base theme export

refactoring: move components to ui and utils to lib

chore: fix styles

chore: move code to Themes

fix: styles and some refactoring