New mode Book learning

[KitKat20255]

Continuation of the ideea #7631

Somewhat similar with custom mode with TTS, you can load very large parts of a book, let's say an entire chapter, (preferably the script will break it down into chunks of 4-7 words that will feel natural chunks of sentence. If not you have to ask an AI to do it first) and you listen/learn it while you practice typing in the same time, and the website can auto detect the times you take to think and process the new concepts in the book and eliminates them, so you don't feel the pressure of typing without thinking. If you take a break from typing for let's say 1 second if you're advanced typist then you're clearly AFK, the website will cut the "dead time" until you resume typing and at the end will process the break between words where you were AFK your average time between two words, even if you took a 5 minute break to understand what you just wrote. (and the written text will be visible for the past few lines so you can re-read the whole idea if you need)