Summary:
Network requests and responses using JSON API content type of pattern `application/vnd.api+json` (see https://jsonapi.org/#mime-types) are currently treated as binary data. They should be treated as textual content.
## Changelog
Add regular expression to detect JSON content types.
Pull Request resolved: https://github.com/facebook/flipper/pull/2337
Test Plan: Using an API that return `Content-Type` of pattern `application/vnd.api+json`, verify that the response data in sidebar appears as text rather than `(binary data)`.
Reviewed By: passy
Differential Revision: D28513547
Pulled By: mweststrate
fbshipit-source-id: 3335b7eeb63c2429c2245113c8c83bd7e08a9420
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