Add project: Textual

[Emasoft]

Project details:

• Project Name: Textual
• Github URL: https://github.com/Textualize/textual
• Documentation: https://textual.textualize.io/
• Category: CLI/TUI Development framework for Python using CSS for styling the UI
• License: MIT
• Package Managers: pypi, conda

Additional context:
Textual is a Rapid Application Development framework for Python, built by Textualize.io.
Build sophisticated user interfaces with a simple Python API and use CSS files for styling!
Run your apps in the terminal or a web browser!