Set up linter + prettier configuration for the Expo repo

Adds a newer version of eslint-config-universe with base linter configurations. Each workspace does not yet have its own, more precise config

Set up linter + prettier configuration for the Expo repo

Adds a newer version of eslint-config-universe with base linter configurations. Each workspace does not yet have its own, more precise configuration right now.

The ESLint config contains root: true so that it doesn't inherit from ESLint configs higher up in the file system. There is also a prettierrc file that both prettier and eslint-config-universe will read i.e. our config is consistent.

Closes #3075

fbshipit-source-id: 0c6d05f

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