Remove the recent revisions state from redux

[julienw]

The goal for this patch is to remove the recent revisions state from redux, replacing it by a local state in SearchInputAndResults.tsx.

This also removes the hook useHandleChangeSearch and the thunk searchThunk and instead moved most of their code directly to SearchInputAndResults.

The debouncing behavior was made somewhat more generic and extracted to a separate helper file. I decided to keep this super simple like it was before, so I didn't use an external dependency and implemented it simply.

Note that some of the code in searchThunk was already implemented in logic/treeherder in a previous patch so I could reuse it directly.

This also resolves a bug with the recent revisions handling between the Compare With Base and the Compare Over Time forms:

1. Changing the repository to mozilla-central in the CompareOverTime form
2. Focus the "new" input in CompareWithBase (the "repository" dropdown is still try in CompareWithBase)
3. Notice the revisions for mozilla-central are displayed.

The issue was that we were using the same state for both inputs. This is solved by this patch thanks to the separate state.

You can look at the commits separately, they should be fairly straightforward when taken one by one.

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[codecov[bot]]

Codecov Report

Attention: Patch coverage is 96.92308% with 2 lines in your changes are missing coverage. Please review.

Project coverage is 97.76%. Comparing base (a8d528d) to head (c11ce48).

Files	Patch %	Lines
src/components/Search/SearchInputAndResults.tsx	96.22%	2 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## beta #642 +/- ## ========================================== - Coverage 97.89% 97.76% -0.13% ========================================== Files 69 66 -3 Lines 1470 1387 -83 Branches 236 235 -1 ========================================== - Hits 1439 1356 -83 Misses 29 29 Partials 2 2 ```

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[julienw]

Thanks for the review!