[FEATURE] Toggle Conceal Feature in Editor with Keyboard Shortcut for Enhanced Error Tracking

[slegt]

I would like to propose an enhancement to the editing environment's "Conceal" feature. While the Conceal feature greatly improves readability by hiding LaTeX commands and showing the resulting formatted text, it can sometimes make tracking down syntax errors challenging due to the obscured commands. Therefore, I suggest implementing a toggle functionality that enables the Conceal feature when a specific keyboard shortcut is pressed.