Use more detailled factors for compute of CO2 emission equivalents.

[AAABBBCCCAAAA]

For instance https://api.carbonintensity.org.uk/ we could get carbon intensity even by the region that user give us or that we found from his location.

What could be nice with this is that even in futur you don't have to update manually values such as defaultCarbonIntensityFactorIngCO2PerKWh.

We could also use carbon intensity from https://www.eea.europa.eu/data-and-maps/daviz/sds/co2-emission-intensity-from-electricity-generation-5/@@view for other countries.