M6 - Connection to the grid data for different countries

[pferrariuy]

• [x] Find and test reliable sources of hourly grid data for different countries.
• [x] Develop connection and extraction methods, and finalize screen showing hourly CO2 avoided.

[pferrariuy]

Source of data: https://github.com/ember-climate/

[pferrariuy]

Adjust formula to use the average of the last 3 emissions_intensity_gco2_per_kwh to calculate to total gco2 avoided.