Add a basic unit test to Database::loadExtension() (without a proper extension to test)
Add a basic unit test to Database::loadExtension() (without a proper extension to test)

mc-server/SQLiteCpp,SRombauts/SQLiteCpp,SRombauts/SQLiteCpp,mc-server/SQLiteCpp,mc-server/SQLiteCpp,SRombauts/SQLiteCpp