[GLA Analytics] Fetch and display data on Google Campaigns analytics card

[ThomazFB]

We need to fetch and display data on the Google Campaigns analytics card:

1. Check the Google Ads connection, and hide the card if the status is not connected.
2. Request the sales and spend data for the current and previous period:
   • Display the current Total Sales amount and percent change from the previous period.
   • Display a list of the top five campaigns (based on sales) with their sales and spend data.

[dangermattic]

Thanks for reporting! 👍