feat: add ThreadBoundaryError

[twoeths]

Motivation

• Failed reqresp e2e tests because Error objects cannot be passed through thread boundary correctly

Description

• Add ThreadBoundaryError that can be passed through thread boundaries
  • for errors that's clonnable, error is null and object is the result of toObject() method
  • for other errors, just pass object as null. They will be deserialized into the generic Error object if passing through thread boundaries

export type ThreadBoundaryError = {error: null; object: LodestarErrorObject} | {error: Error; object: null};

• For errors that we want to pass through thread boundaries, they need to

  • implement a newly created ClonableLodestarError class which includes class name there in toObject method
  • implement static fromObject method
  • for now I see only RequestError and ResponseError need this

• For other errors (don't see the need for now) it'll be deserialized into the generic Error object if we pass them through thread boundaries