refactor: mark {In, Out}boundOpenInfo as deprecated

[drHuangMHT]

Description

Mark {In, Out}boundOpenInfo as deprecated. May close #3268.

Notes & open questions

I have changed all occurrence of OpenInfo with () or Void where they apply to avoid excessive use of #[allow(deprecated)]. Is this an optimal move?

Change checklist

• [ ] I have performed a self-review of my own code
• [ ] I have made corresponding changes to the documentation
• [ ] I have added tests that prove my fix is effective or that my feature works
• [ ] A changelog entry has been made in the appropriate crates