* Use `snapcraft.yaml` as the source-of-truth for APT dependencies to reduce burden of maintianing multiple lists
Signed-off-by: Daniel Llewellyn <daniel@snapcraft.ninja>
* Add `snap/` directory containing
- `snapcraft.yaml` the build script
- `local/usr/lib/python3.6/sitecustomize.py` a snap-specific override
file to get python to recognise the snap's python paths
* Add `*.snap` to gitignore so built snap packages aren't accidentally
committed to the repository.