chore: Set UA to desktop / linux / chrome and add the ability to set custom headers in scraper

[vvatelot]

No description provided.

[github-actions]

Branch coverage •

File	Stmts	Miss	Cover	Missing
components/ecoindex/scraper
scrap.py	102	54	47%	56, 64, 67–68, 70, 79, 82, 85–86, 89, 104–112, 115–119, 121, 123, 130–133, 140–142, 144–153, 162–163, 166–167, 169, 178–179, 184–185, 189–190
TOTAL	710	230	67%