Draft: Move dialogue.py to plugins/ folder

I basically did literally the exact same thing, it was supposed to work, it never did because Pyrogram threw me an error that it did not load any plugins from the plugins folder, and now it just miraculously works.

I'm highly suspicious of that, and as I intend to make every commit main "ready to be deployed", I am putting the change up for review just to be completely sure that this wasn't just me testing the change on an older version for now.