bytecode viewer doesn't export non class files

[jredfox]

JRE: 1.8.0_321 version: Bytecode-Viewer-2.11.0

steps to reproduce:

• take this jar abyssalcraft-1.3.0-src.jar.zip
• click decompile and save all classes with either fernflower or procyon
• notice it only does class files and doesn't preserve the jar

Why: this is a hassle if you have a whole bunch of resources scattered throughout the jar or even non java files like html, py etc... if you intended on having it save only classes for save all classes then you should provide decompile and save all. I don't recall it skipping non class files before but I could be wrong.