Store and expose Licenses
Now that gitlab-org/gitlab!90754 (merged) is merged, licenses are exposed via the Dependencies API endpoint.
This MR adds support for these licenses in GIB.
Licenses are now stored in the dependencies
table of the database, in
a TEXT
column that can be casted to json
to query them.
A new licences
table is added to the DB, only storing the name and the
URL of the licenses. We will store more fields maybe in the future.
refs #40