[Feature] Add Unifying trait for TxSigner and Signer

[mattsse]

Component

signers

Describe the feature you would like

ref #2027

these two traits are object-safe but there are usecases where we need the functionality of both

these traits are usually implemented for the same type:

alloy/crates/signer-local/src/lib.rs

Line 178 in ef23dae

impl<C> TxSigner<Signature> for LocalSigner<C>

alloy/crates/signer-local/src/lib.rs

Line 96 in ef23dae

impl<C: PrehashSigner<(ecdsa::Signature, RecoveryId)> + Send + Sync> Signer for LocalSigner<C> {

I'd be nice to use dyn with both, which can be achieved via a helper trait

trait AnySinger<S>: Singer<S> + TxSigner<S> {}

impl<T, S> AnySinger<Signer> for T where T: Signer<S> + TxSigner<S>

TODO

• introduce helper trait, and one for Sync

Additional context

No response

[startup-dreamer]

I's like to work on this.

[mattsse]

assigned ty

[startup-dreamer]

@mattsse Should I implement both the traits in a new single file (maybe any_signer.rs) or do you want it to be seperate files?

[mattsse]

we can simply add this in the file this resides in

alloy/crates/network/src/transaction/signer.rs

Line 81 in b618450

pub trait TxSigner<Signature> {