Adds INSA Rennes - EII timetables

[TheBloodMan49]

Adds a specialty's timetables to this cool app :) I tested all the timetables in local (using the dev compose file) and everything should be correct.

Thanks for making this it's way better than our school's app

[kernoeb]

Cool, merci ! J'attends que les tests passent et je merge ça :)