Various updates

[macalinao]

Changes:

• Adds MetaMask support
• Adds account name to connectors
• Adds helpers for ethers.js users

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[aslawson]

Oh I also didn't realize you cleaned up mobile view as well. That was another ticket this sprint:
celo-org/celo-monorepo#7932
celo-org/celo-monorepo#7934
When I test on mobile, it always sends me to MetaMask install even when I have the mobile app downloaded...

How do you want to reconcile our changes into your library? Happy to do whatever is easiest

Hey @macalinao --

It looks like @AlexBHarley already pushed the code for the Valora changes and look like also updated the mobile version. So if its not too much trouble, if you could:

• rebase and add the Metamask add (with updating Celo Extension Wallet image)
• resolve issue with Mobile Metamask or remove it.

🙏🙏🙏

We can updated the Celo Docs part after merge.