Add ACEA vehicle numbers to compare to in the report#73

Draft

Loisel wants to merge 2 commits intopik-piam:masterfrom Loisel:add_acea

+52-1

Commits on Sep 15, 2021

Copy acea files and add some processing logic (unfinished)
Loisel
committed

Commits on Sep 16, 2021

Apply some ACEA classifications to the EU data.
Loisel
committed