Fixes#268
I fixed it by dropping the dependency on quicktype entirely, and using its dependency directly. I still don't understand why the version of typescript used in this repository affects what quicktype is doing, but it seems like the issue is in quicktype, not its dependency.
I validated this change was correct by diffing the output of `node scripts/generate-file-format-schema-json.js` with what's currently on http://speedscope.app/file-format-schema.json. There's no difference.
This PR also includes changes to the CI script to ensure that we can catch this before hitting master next time.
While it was kind of nice having everything at the top level, the number of files is now getting a bit unwieldy and hard to understand, so I took a stab at organizing the directories without introducing too much nesting.
Test Plan:
- Ran `npm run serve` to ensure that local builds still work
- Ran `npm run prepack` then `open dist/release/index.html` to ensure that release builds still work
- Ran `scripts/deploy.sh` to ensure that the deployed version of the site will still work when I eventually redeploy
- Ran `npm run jest` to ensure that tests still work correctly
