automagically extract the bundled icon from games installer
Context: brainstorming with @detiste-guest in !105 (merged)
Status:
- It Works (for me), I now have nice icons in GnomeShell with scummvm based game packages
- I only implemented the extraction from GOG's innosetup installers
Goals:
- It should work when the innosetup file is passed as arg on the CLI
- It should work when simply repacking from an already installed package
- No nameclash, it should not prevent multiple languages of the same game to be installed if it was possible before those changes
I never looked at build.py
before, i'm sure I made mistakes ^^