Add a simple text editor

[asensio-project]

Hi everyone,

This is the tracking issue for adding a simple text editor for adding expositions:

• Start using Lexical
• Stylize the ContentEditable and Placeholder
• Add Toolbar
• Add support for Undo & Redo
• Detect Paragraph Format
• Support for headers
• Support for unordered list
• Support for ordered list
• Support for quotes
• Detect Text Format
• Support for Bold
• Support for Italics
• Support for Underlines
• Detect Insertions
• Support for Links
• Support for Images
• Support for Tables
• Support for YouTube Videos
• Support for Equations
• Detect Text Align
• Support for Right Align
• Support for Centre Align
• Support for Justify
• Improve Responsiveness

[asensio-project]

NOTE: Automatic change on selection for FontFormat