Move EIP-6963 Capabilities Out of Umbrella `web3` Package and Into `web3-utils`

[danforbes]

In order to promote lightweight dApp development, EIP-6963 capabilities should be moved out of the umbrella web3 package and into the web3-utils package. This will allow dApp developers to make use of the helpful and important EIP-6963 standard without needing to pull in every dependency that is exported by the umbrella web3 package.

[krzysu]

I'm linking this one here #7280 as it seems they both could be handled together.