Improve alloy integration devex

[joshstevens19]

check - https://github.com/joshstevens19/rrelayer/blob/master/crates/sdk/src/alloy_integration.rs to make sure it is working as expected
update docs - https://rrelayer.xyz/integration/sdk/framework-guides/rust/alloy so its easy for anyone with alloy installed to use rrelayer

[Peponks9]

hi @joshstevens19, happy to start contributing to this issue (catching up with the codebase)

[joshstevens19]

always @Peponks9 marked it in-progress for you