Having a generic interface over the GPS drivers makes dedicated
functionality for each driver harder. Move the Septentrio driver into
its own module under the `gnss` driver directory, and let it have its
own parameters for only the functionality it requires. This also helps
with adding new features because they only need to be implemented for
the driver that wants it, simplifying testing.
EditorConfig is a well-known convention to share style settings across
different editors. Adding one will make it easier for new contributors
or people who like to use a different editor to contribute.
Thomas Frans