Add Flutter, closes #138 [New App]

Flutter

Status:  ✳️ Yes, works via Rosetta 2 with native support in development

https://doesitarm.com/app/flutter

README.md

@@ -32,6 +32,7 @@ Any comments, suggestions? [Let us know!](https://github.com/ThatGuySam/doesitar
 * [Docker](https://www.docker.com/products#/mac) - 🚫 Not yet, but it’s in development - [Official Post](https://www.docker.com/blog/apple-silicon-m1-chips-and-docker/) [Github Issue](https://github.com/docker/for-mac/issues/4733#issuecomment-653444409)
 * [Electron](https://www.electronjs.org/releases/stable) - ✅ Yes, full native support as of v11.0 - [Announcement](https://www.electronjs.org/blog/apple-silicon)
 * [Filezilla](https://filezilla-project.org/) - ✳️ Yes, works via Rosetta 2 - [Verification](https://github.com/ThatGuySam/doesitarm/issues/17#issuecomment-729976000)
+* [Flutter](https://flutter.dev/docs/get-started/install/macos) - ✳️ Yes, works via Rosetta 2 with native support in development - [Github Issue](https://github.com/flutter/flutter/issues/60118#issuecomment-695341296)
 * [Fork](https://git-fork.com/) - ✳️ Yes, works via Rosetta 2 - [Release notes](https://git-fork.com/releasenotes)
 * [Git](https://git-scm.com/download/mac) - ✅ Yes, Full Native Apple Silicon Support - [Source](https://github.com/ThatGuySam/doesitarm/issues/54#issuecomment-730568063)
 * [Go](https://golang.org/) - ✳️ Runs via Rosetta with native builds being tested - [Issue](https://github.com/golang/go/issues/38485)