Move async fixtures (#13304)

fixtures/unstable-async/suspense/.gitignore renamed

fixtures/unstable-async/suspense/README.md renamed

fixtures/unstable-async/suspense/package.json renamed

fixtures/unstable-async/suspense/public/favicon.ico renamed

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fixtures/unstable-async/suspense/public/img/bvaughn.jpeg renamed

fixtures/unstable-async/suspense/public/img/flarnie.jpeg renamed

fixtures/unstable-async/suspense/public/img/gaearon.jpeg renamed

fixtures/unstable-async/suspense/public/img/sebmarkbage.jpeg renamed

fixtures/unstable-async/suspense/public/img/sophiebits.jpeg renamed

fixtures/unstable-async/suspense/public/img/trueadm.jpeg renamed

fixtures/unstable-async/suspense/public/index.html renamed

fixtures/unstable-async/suspense/public/manifest.json renamed

fixtures/unstable-async/suspense/src/api/data.js renamed

fixtures/unstable-async/suspense/src/api/index.js renamed

fixtures/unstable-async/suspense/src/cache.js renamed

fixtures/unstable-async/suspense/src/components/App.js renamed

fixtures/unstable-async/suspense/src/components/ContributorListPage.js renamed

fixtures/unstable-async/suspense/src/components/Spinner.css renamed

fixtures/unstable-async/suspense/src/components/Spinner.js renamed

fixtures/unstable-async/suspense/src/components/UserPage.js renamed

fixtures/unstable-async/suspense/src/index.css renamed

fixtures/unstable-async/suspense/src/index.js renamed

fixtures/unstable-async/suspense/yarn.lock renamed

fixtures/unstable-async/time-slicing/.gitignore renamed

fixtures/unstable-async/time-slicing/README.md renamed

fixtures/unstable-async/time-slicing/package.json renamed

fixtures/unstable-async/time-slicing/public/favicon.ico renamed

fixtures/unstable-async/time-slicing/public/index.html renamed

fixtures/unstable-async/time-slicing/public/manifest.json renamed

fixtures/unstable-async/time-slicing/src/Charts.js renamed

fixtures/unstable-async/time-slicing/src/Clock.js renamed

fixtures/unstable-async/time-slicing/src/index.css renamed

fixtures/unstable-async/time-slicing/src/index.js renamed

fixtures/unstable-async/time-slicing/yarn.lock renamed