fix(chisel): add known_contracts support for trace decoding

[DeVikingMark]

Motivation

The decode_traces method had a TODO to restore known_contracts support. Without it, chisel only uses external sources for trace decoding, resulting in lower quality traces compared to other Foundry tools. Local contracts written in the REPL cannot be properly identified in traces.

Solution

Restored known_contracts support by:

• Adding ContractsByArtifact parameter to decode_traces
• Extracting compiled artifacts from SessionSource and creating ContractsByArtifact
• Using with_known_contracts() and with_local() to improve decoder and identifier

This matches the pattern used in cast and forge for consistency.

PR Checklist

• Added Tests
• Added Documentation
• Breaking changes

[onbjerg]

please fix format, clippy and the tests, thanks