Plan out overview Metric Cards in Dashboard

[linear[bot]]

DT-22 [DT-17] Overview Metric Cards in Dashboard

[jolenechong]

Plan for these metric cards

• Number of visitors (include any recent changes in the last month)
• Most popular industry (though this might not change much and might not be that useful of a metric but it does give an overview into the other analysis below)
• Average time spent on site (include any recent changes in the last month)

First 2 have been completed by @fallendynasty, @bljr03 would be working on the last column (will require finding the information first).