explorer: Show cluster staking information

[jstarry]

Problem

• Want to see list of validators, map, and live leader schedule
• Want to see stake distribution, delinquency, skipped blocks %, and staking instructions

Proposed Solution

• Add new /staking route
• Use Solana Beach UI components
  • Staking card (delegated, warmed up, active, delinquent)
  • Live leader schedule + map card
  • Validator list table for stake distribution

[samuelmaina]

Hello @jstarry. I am not able to comprehend what you mean by map card. Please can you explain?