Tracking: Improved Code Navigation

[camdencheek]

This tracks issues related to the Improved Code Navigation user journey in the Q4 work plan for Search Suite.

### Tasks
- [ ] https://github.com/sourcegraph/sourcegraph/issues/57809
- [ ] https://github.com/sourcegraph/sourcegraph/issues/57808
- [ ] https://github.com/sourcegraph/sourcegraph/issues/57821
- [ ] https://github.com/sourcegraph/sourcegraph/issues/57824
- [ ] https://github.com/sourcegraph/sourcegraph/issues/57826
- [ ] https://github.com/sourcegraph/sourcegraph/issues/57829
- [ ] https://github.com/sourcegraph/sourcegraph/issues/57835
- [ ] https://github.com/sourcegraph/sourcegraph/issues/58126
- [ ] https://github.com/sourcegraph/sourcegraph/issues/57834
- [ ] https://github.com/sourcegraph/sourcegraph/issues/58205
- [ ] https://github.com/sourcegraph/sourcegraph/issues/58237
- [ ] https://github.com/sourcegraph/sourcegraph/issues/57831
- [ ] https://github.com/sourcegraph/sourcegraph/issues/58208
- [ ] https://github.com/sourcegraph/sourcegraph/issues/57827
- [ ] https://github.com/sourcegraph/sourcegraph/issues/58417
- [ ] https://github.com/sourcegraph/sourcegraph/issues/58409
- [ ] https://github.com/sourcegraph/sourcegraph/issues/57813
- [ ] https://github.com/sourcegraph/sourcegraph/issues/57819
- [ ] https://github.com/sourcegraph/sourcegraph/issues/57822
- [ ] https://github.com/sourcegraph/sourcegraph/issues/57825
- [ ] https://github.com/sourcegraph/sourcegraph/issues/57828
- [ ] https://github.com/sourcegraph/sourcegraph/issues/57830
- [ ] https://github.com/sourcegraph/sourcegraph/issues/57833
- [ ] https://github.com/sourcegraph/sourcegraph/issues/57837
- [ ] https://github.com/sourcegraph/sourcegraph/issues/57817
- [ ] https://github.com/sourcegraph/sourcegraph/issues/57849

[camdencheek]

Closing as done