Add source export

[MadTooth]

In jd-gui.exe sometimes writes in a file // INTERNAL ERROR //, and in your program writes another text You can add saving, and saving all sources to your best top 1 program Download -> jd-gui.exe or jd-gui.jar -> http://jd.benow.ca Pictures -> https://i.imgur.com/WUsTAIc.png , https://i.imgur.com/V3lUbVA.png , https://i.imgur.com/Tha5bzC.png