Allow to pass http headers for --fork-url

[vbrvk]

Component

Anvil

Describe the feature you would like

I trying to setup e2e testing with anvil, my private node protected by http header with token, but anvil does not support passing http headers to fork url.

It would be nice to have such option, for example under --fork-header key with support of multiple headers at once

Additional context

No response

[vbrvk]

I would like to implement this feature by myself, if we are agree on param name and if it is useful at all

[mattsse]

cool, I think this is reasonable.

the argument should be called --fork-headers: Vec<String> I think,

and should be grouped with the existing fork attributes:

foundry/crates/common/src/evm.rs

Line 49 in 30ae702

pub fork_url: Option<String>,

then we need support for this here:

foundry/crates/common/src/provider.rs

Line 49 in 30ae702

pub struct ProviderBuilder {

and

foundry/crates/common/src/runtime_client.rs

Line 131 in 30ae702

"http" | "https" => {