## Summary
- Integrated the RouteTable into the Routers frame processing.
- Frames are now dropped when their TTL reaches 0
## Test process
Added five tests that check routing passes and fails with correct/incorrect route tables.
## Checklist
- [ ] PR is linked to a **work item**
- [ ] **acceptance criteria** of linked ticket are met
- [ ] performed **self-review** of the code
- [ ] written **tests** for any new functionality added with this PR
- [ ] updated the **documentation** if this PR changes or adds functionality
- [ ] written/updated **design docs** if this PR implements new functionality
- [ ] updated the **change log**
- [ ] ran **pre-commit** checks for code style
- [ ] attended to any **TO-DOs** left in the code
#2139 - Implemented routing
Related work items: #2139