smol update

Full Changelog: v1.2.0...v1.2.1

I decided to make it not a single file anymore, just because it slows down the startup so much. Also, I just learned that newer pyinstaller versions can compile with all the required libraries in a single subfolder, so everything looks clean. I also bundled it with nircmd so you don't have to install it yourself. Finally, I added a nice little icon to it. Enjoy!