I think it might be more honest to help the user fetch framework-res.apk from a connected device or emulator using `adb pull` rather than including one in Debian, since for many use cases, it'll require a different framework-res.apk. Like the example in the apktool docs, where it talks about an HTC-specific framework-res.apk: https://ibotpeaches.github.io/Apktool/documentation/
Perhaps `apktool install-framework` could modified to do this? Or just a standalone script? I think we should definitely patch apktool to set an XDG dir. I prefer ~/.local/share/apktool since the file is required for apktool to work, but ~/.cache/apktool would be OK.
