Migrate SearchConfig.js to TypeScript
Migrate SearchConfig.js to TypeScript

Bug: 1011811
Change-Id: I2f4197739053361242c958c9e8f7e976825821f5
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/2428332
Auto-Submit: Jack Franklin <993fcadce4d04090da2fefd557a0995e7966c8d5@chromium.org>
Commit-Queue: Tim van der Lippe <dba8716ee7f8d16236046f74d2167cb94410f6ed@chromium.org>
Reviewed-by: Tim van der Lippe <dba8716ee7f8d16236046f74d2167cb94410f6ed@chromium.org>

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