refactor: pass chainId on request

[janndriessen]

If you search for chainId in the project, you'll find that almost all builders and quote providers fetch the network's chainId. This ticket is to check how expensive this is and if chainId should rather be passed as part of the build/quote request. This would:

• avoid an extra potential network call? (performance)
• make it more clear what the user wants to request*

* up to the SDK to check if the request chainId and the provider's actually connected chainId is the same. Or is the users responsibility?