Requesting a new app: AppFlowy

[M-Rick]

Requesting a new app ✨

• I have checked that this app does not already have a pending request and has not previously been declined.
• App Name: AppFlowy
• Download URL: https://github.com/AppFlowy-IO/AppFlowy/releases/download/0.4.6/AppFlowy-0.4.6-linux-x86_64.deb
• Website URL: https://www.appflowy.io/
• App Summary: AppFlowy is an open-source alternative to Notion. You are in charge of your data and customizations. AppFlowy is a productivity and note-taking web application developed by Notion Labs Inc. It offers organizational tools including task management, project tracking, to-do lists, and bookmarking.