Add example of using multiple EVM compatible networks, including single signer on multiple providers

[zerosnacks]

Goal of the example would be to demonstrate the usage of multiple EVM compatible networks (Optimism, Arbitrum, etc..), including how to create a signer and to join over multiple providers and to send transactions with the different providers whilst reusing the same shared signer.

Requested originally in #52

[dicethedev]

@zerosnacks I will like to pick this up if not resolved already

[zerosnacks]

Thanks @dicethedev! Assigning

For reference, this is how we use AnyNetwork: https://github.com/alloy-rs/examples/blob/main/examples/advanced/examples/any_network.rs

Perhaps we can expand this and introduce an Optimism provider too

[dicethedev]

Thanks @dicethedev! Assigning

For reference, this is how we use AnyNetwork: https://github.com/alloy-rs/examples/blob/main/examples/advanced/examples/any_network.rs

Perhaps we can expand this and introduce an Optimism provider too

Okay. I will take a look at it

[dicethedev]

@zerosnacks Hey.. quick update.. almost done with it and just making sure I test and it works well. PR soon!