Develop an HTML, CSS, and JavaScript editor with real-time preview. The interface should be divided into 4 sections: two rows and two columns, one for each language and one for the preview. Each section should have an icon representing the corresponding language. Additionally, include a left sidebar with functions such as full-screen preview, open in another tab, reload, share link, download code, and additional options that expand upon clicking a button. The color scheme should be visually pleasing and programmer-friendly. | A shadcn/ui and v0 generation - v0
