Add execution traces to ExEx

[pistomat]

Describe the feature

I want to consume execution traces in my ExEx.

Currently the Chain struct does not contain them. The obvious solution would be to re-execute the block with a custom executor, but that would mean unnecessary additional computation.

I hear there is a plan to add a custom executor with an inspector. As per reth telegram group discussion, I am adding this issue.

CC @mattsse @shekhirin

Additional context

No response

[github-actions[bot]]

This issue is stale because it has been open for 21 days with no activity.

[pistomat]

Nooo don't close this.

[mattsse]

indeed, sorry for the delay, we need to do some additional prep for this feature to not make a total mess hehe

but this is very much planned