Exercises Engine Improvements

Better Settings Design: The settings interface has been redesigned for better usability. It is now divided into two sections: Playback settings and Interface settings.

Volume Control: Added volume control so you can adjust audio levels directly within exercises. No need to adjust your system volume anymore! There are two volume controls: one for media (audio and video) and one for sound effects. The settings are saved in the browser.

Textarea with Automatic Height: Replaced the input field with a textarea that automatically adjusts its height based on what you write. This makes it much easier to see longer answers and provides a better writing experience.

Sound Effects: Added sound effects to provide audio feedback for your actions. This makes the exercises more engaging and provides immediate feedback for your answer.

Better Correct and Wrong Answer Display: Improved how answers are displayed, making it easier to know if your answer is correct or wrong.