Avoid missing directory error when running dev

[joshuafredrickson]

When pulling down a fresh copy of Sage and running yarn && yarn dev, the following error occurs due to a missing public directory:

$ vite
node:fs:2426
    return binding.writeFileUtf8(
                   ^

Error: ENOENT: no such file or directory, open 'public/hot'
    at Object.writeFileSync (node:fs:2426:20)
    at Server.<anonymous> (file:///***/sage/wp-content/themes/sage/node_modules/laravel-vite-plugin/dist/index.js:110:14)
    at Object.onceWrapper (node:events:638:28)
    at Server.emit (node:events:536:35)
    at emitListeningNT (node:net:1980:10)
    at process.processTicksAndRejections (node:internal/process/task_queues:89:21) {
  errno: -2,
  code: 'ENOENT',
  syscall: 'open',
  path: 'public/hot'
}

This error doesn't occur if you happen to run yarn build before yarn dev. Adding an empty public directory to the repo alleviates this issue.