Add historical data charts

The https://explorer.bitshares.ws/#/dashboard page has interesting market charts like:

<img width="928" height="386" alt="Image" src="https://github.com/user-attachments/assets/3332e21d-fb10-4b5e-a8df-85cf48287512" />

We could fetch the same data to display to the user within the top markets page.