feat(typing): type HTTP status constants

[copalco]

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[vytas7]

Wondering if it would be worth annotating them as HTTP_*: Final[str] = ...?

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 100.00%. Comparing base (ab9d674) to head (bd877fb). Report is 1 commits behind head on master.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #2275 +/- ## ========================================= Coverage 100.00% 100.00% ========================================= Files 63 63 Lines 7112 7170 +58 Branches 1260 1260 ========================================= + Hits 7112 7170 +58 ```

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