prepare artifacts archive

.gitlab-ci.yml

+outputs:
+  artifacts:
+    paths:
+       - "*/Notebook*ipynb"
+       - "Course_Information/*"
+       - "Notebook*/*png"
+       - "Notebook 5/exercise_data.dat"
+       - "Notebook 5/v_vs_time.dat"
+       - "Outline of notebooks.ipynb"
+       - "Additional*/*"
+    name: Lecture_Notebooks