Reorganize detector files into src/detectors/ following the same
pattern as src/integrations/. Rename detector-interface.ts to
detector.ts (the interface), and detector.ts to cookie-detector.ts.
Barrel export from detectors/index.ts provides Detector interface
and all three detector classes.
Signed-off-by: Émile Ré <emile@getprobo.com>
dc6a06cda8