Add tests and test stanza
These stanzas are used to easily define tests. If a test has a corresponding .expect file, it will be immediately considered as an expect test.
This applies to the program name in text as well as CLI commands, but
not to existing jbuilder files.
Signed-off-by: Etienne Millon <etienne@cryptosense.com>
Rudi Grinberg
Etienne Millon
Jérémie Dimino