## Summary
- Added a `listen_on_ports` set in the `IOSoftware` class to enable software listening on ports in addition to the main port they're assigned.
- Also added something I missed in the `CHANGELOG.md` from user login ticket 🙃
## Test process
- Tested listening on ports with a dummy listener software class and counted frames snooped on.
- Also tested that the actual software that the posts being snooped in on still works as expected.
## Checklist
- [X] PR is linked to a **work item**
- [X] **acceptance criteria** of linked ticket are met
- [X] performed **self-review** of the code
- [X] written **tests** for any new functionality added with this PR
- [X] updated the **documentation** if this PR changes or adds functionality
- [X] written/updated **design docs** if this PR implements new functionality
- [X] updated the **change log**
- [X] ran **pre-commit** checks for code style
- [ ] attended to any **TO-DOs** left in the code
Related work items: #2768
ca2aef7343