ONEKEY baseline

[qkaiser]

Draft branch to establish a baseline for code quality and probably do some refactoring as mentioned in #75

[tnias]

Not sure if this is the correct place to comment on this, but this looks like a cleanup and I thought it might fit. :)

The pyproject.toml (or the setup.py before) is very vague with license = "GNU GPL".

I found the following indicators:

• LICENSE file is GPL-3.0
• ubireader/ubi/defines.py: GPL-2.0-or-later
• ubireader/ubifs/defines.py: GPL-2.0 (without clarification for "-only" or "-or-later")
• all other non-empty python files had a GPL-3.0-or-later header

[qkaiser]

@tnias makes sense, thanks for pointing it out