search: rename most jobs to be consistent
Created by: keegancsmith
This is series of refactors which just rename the names of jobs. Additionally in some cases we updated the return value of the Name() function. The philosophy guiding this change is:
- Avoid stutter (
zoekt.Zoekt*
->zoekt.*
) - Mention Text if it is a text search job
- Mention Search if it is a search job (vs alert jobs/etc)
- Name should be
Upper(package) + TypeName
Complete version of https://github.com/sourcegraph/sourcegraph/pull/35935
Test Plan: all just refactors, so just that tests pass.