feat: add website url field for chains

[leovct]

Description

Add a new field called websiteUrl to the Chain type which references a website or a documentation related to the chain. For example, the Ethereum chain would have a reference to https://ethereum.org/.

Related to #462

Question: I tried to add a changeset by selecting @wagmi/chains and pressing enter but didn't suceed...

$ pnpm changeset
🦋  Which packages would you like to include? · No items were selected
🦋  error You must select at least one package to release
🦋  error (You most likely hit enter instead of space!)
🦋  Which packages would you like to include? … 
◯ changed packages
  ◯ @wagmi/chains
◯ unchanged packages
  ◯ @wagmi/connectors

Additional Information

• [x] I read the contributing docs (if this is your first contribution)

Your ENS/address: leovct.eth

[changeset-bot[bot]]

⚠️ No Changeset found

Latest commit: ddac9387f0c3361b4ffc4c52a9416cd73b6344cf

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

This PR includes no changesets

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[leovct]

@jxom @tmm any thoughts?

[tmm]

Not sure this is something we want to add right now, but if we do in the future, will make sure you get credit for this contribution.