Split the code across multiple files

[ddavness]

There's is nothing technically wrong with having all the code in a single file, but at this point where you have portions of the code that handle different things (connection to the discord application, handling electron, getting info from the rich presence server, etc.) it begins to make sense to move parts of the code across multiple files.

Also a single file with 500 lines tends to be hard to read...

[JiveOff]

@ddavness I agree with you on this.
I will try to make it look better on the next releases.