Add summary with stats

[nathanshammah]

It could be nice to add a summary with the stats of the closed bounties / $ won / etc, also pulling them from https://unitaryhack.dev/results/. Right now in the results page they are divided per project, but it could be useful to aggregate this data, e.g.,

• yyy bounties closed
• aaa $ bounties claimed
• zzz contributions to uHACK projects
• bbb contributors