Merge with dev branch

[difhel]

What's fixed/added:

• color update according to Superdef design system
• color scheme update according to Material Design 3 specification (added tonal-based surface colors, more info https://vk.com/sdf_app?w=wall-215344169_46). Colors generated from https://github.com/difhel/material-theme-figma-to-css.
• large-scale update of dependencies and fixing of vulnerabilities in them
• partial implementation of Button component
• SCSS preprocessor support in the code base (see Migrate to SCSS #4 replace the color variables #7 replace all CSS files with SCSS #8 remove unnecessary dependencies related to sass/scss #9)
• adding Vite to dev dependencies for quick testing of the library in HMR
• added theming via CSS variables and useAppearance hook
• added testing with Jest