Add SupaSidebar to Menu Bar Tools

[auspy]

What this adds

Adds SupaSidebar to the Menu Bar Tools section.

SupaSidebar is a native macOS app that brings an Arc-style sidebar to every browser - one place to organize tabs, bookmarks, files, and apps across all your browsers.

• Website: https://supasidebar.com/
• Install: brew install --cask supasidebar
• Native Swift / SwiftUI macOS app, free to start (Freeware badge)

Checks

• Searched the list for duplicates - not already present
• Entry links to the product homepage
• Description is one concise, factual sentence
• Placed alphabetically within Menu Bar Tools
• Freeware badge added (free tier); no Open-Source badge (app is closed-source); no App Store badge (not on MAS)
• Localized README files (zh / ja / ko) updated to match

Disclosure: I'm the developer of SupaSidebar.