Add Darwinia chain to the Token Terminal Dashboard

- https://tokenterminal.com/explorer/studio/dashboards/b098b738-0a30-433f-a63a-bc0d4a4ebac5

Reach out to the Token Terminal team to explore how to add support for the Darwinia chain to this dashboard.

![image](https://github.com/user-attachments/assets/74bfa3e8-757e-4f14-adf5-959d3ee23aaf)

![image](https://github.com/user-attachments/assets/6e65012b-5759-4102-a1d7-73dbd32d65ca)
