Update Wallets on Dev Docs.

[flow-slack-issue-bot]

Reported by: Ali Serag (<@ali.serag>)

Issue Description:

Wallets is 2nd most searched for doc on our dev docs site yet needs some updates:

1. Frame Flow Wallet as the recommended wallet in the ecosystem and highlighting that transactions are sponsored across apps in the ecosystem, do not refer to it as oldest.
2. Metamask isn't in the same grid as the others, should be closer to the top.
3. Magic.link is more for devs similar to Flow Dev Wallet, they can be grouped together.
4. Niftory and Blocto should be removed as no longer active.