Shotwell snap

This project creates a working snap of Shotwell from gnome git.

To get this done, we need to do the following:

• build from current git (latest tag)

Current state

Working features:

• Photo import from folder

Known issues:

• Only builds with --no-parallel-build (fixed in master)
• Starts with gtkconf if installed via --devmode

TODO:

• Fix the need for --devmode
• check gtkconf