This refactoring includes:
- the use of baguette-crystal-base (Baguette::Log, Baguette::Context for verbosity and logfile)
- moving configure, build, install and splits backends into dedicated files
- removing a lot of code from Package::Context (it was a mess, still kinda is)
- fix 32-bit integer bug from APK backend
- some API changes in packaging backends to remove the context instance
it was replaced by two parameters: package directory and architecture
- Baguette, APK and PkgUtils now share (kinda) the same coding style