Use framework-agnostic styling solution

[prichodko]

The @status-im/react currently uses styled-components for styling. This approach is suitable for developing apps, but not for code used in other people's applications. styled-components are one of many solutions that developers can use, so after doing some research, the best practice is to distribute framework-agnostic solution, such as separate .css file, which will be up to the developer to include.

Examples:

• Sandpack
• Mirror.xyz Design System
• Reach UI