Nominators Earnings Leaderboard

[prastut]

Currently, the home page is all about validators, should we show nominators as well and then toggle them by a button

[saumyakaran]

v1 will be a table of nominators sorted by their expected daily earnings. The table shall include the following:

• [ ] Nominator name (if available, else nominator address as currently implemented in PolkAnalytics' nominator specific view)
• [ ] Nominator's expected daily earning
• [ ] On clicking the list item, the user should be directed to the specific view of the given nominator

[saumyakaran]

Closing in favor of https://github.com/buidl-labs/YieldScan/issues/9