Add naive snapcraft.yaml

[zyga]

This patch moves all of the old content, except for licenses and meta/
into the pre-built directory. The snapcraft.yaml is derived from the
old meta/snap.yaml with the addition of the required confinement and
grade properties (as suggested by snapcraft). All of the old pre-built
content is installed with a pre-built part using the dump plugin which
simply copies the files across.

The icon is moved to the setup/gui directory, after building it ends up
in a different location but arguably the one that is more correct
(meta/gui/icon.png).

Signed-off-by: Zygmunt Krynicki zygmunt.krynicki@canonical.com

[mvo5]

Nice! did you compare the build snap with the snap we have in stable? is the filelist the same with unsqushfs -ll for both?

[zyga]

I eyeballed the prime/ directory with what was in the repository before.

[ogra1]

looks fine on first sight