feat: add Sourcify support to TraceIdentifiers

[silvekkk]

close #11809

a new SourceifyIdentifier that fetches contract ABIs from Sourcify's public API without requiring an API key. integrates into the existing TraceIdentifiers system, checking Sourcify after local contracts but before Etherscan.

use it by calling .with_sourcify() when building TraceIdentifiers.

[grandizzy]

thank you, makes sense! left couple of nits, can you add a test too?

[silvekkk]

thank you, makes sense! left couple of nits, can you add a test too?

Fixed and test now.

[grandizzy]

thank you, have to get back on this, seems that the changes hangs CI (probably waiting on sourcify response) maybe you can run external tests locally and see if you figure it out

[silvekkk]

thank you, have to get back on this, seems that the changes hangs CI (probably waiting on sourcify response) maybe you can run external tests locally and see if you figure it out

The CI hang was because tests were making real HTTP calls to Sourcify. Should be good now.

[grandizzy]

thank you, have to get back on this, seems that the changes hangs CI (probably waiting on sourcify response) maybe you can run external tests locally and see if you figure it out

The CI hang was because tests were making real HTTP calls to Sourcify. Should be good now.

CI should make real HTTP calls to sourcify when running external tests (they clone known projects and run forge tests on them)

[silvekkk]

CI should make real HTTP calls to sourcify when running external tests (they clone known projects and run forge tests on them)

Thanks for the clarification!

Simplified the approach - removed the cfg!(test) guard and instead added a 5-second timeout to prevent infinite hangs.
The tests now is good and forge integration tests pass normally without hanging.

[kuzdogan]

The changes that use APIv2 LGTM

Just a comment if it should only work for Ethereum Mainnet.

[DaniPopes]

Taken over in #11917, taken a different approach and will take a bit more to get through since of various requirements, and this being turned on by default. Thanks for the PR anwyay