fix: Can't open static-json directory error when using useStatic in devloping

[ics-nishihara]

🐛 The bug
When I use useStatic, "ENOENT: no such file or directory '.../.nuxt/static-json/foo-bar.json'" error occurs at first access or reload in dev mode.
This error does not cause any other problems, only shows error log.

🛠️ To reproduce
Steps to reproduce the behavior:

1. Use useStatic in code, like example.
2. Run "dev" command
3. Access the localhost:3000, browser console shows this error at Nuxt SSR.
4. Reload page, this error is too.

🌈 Expected behaviour
This error doesn't shown at in dev mode.

ℹ️ Additional context
This error fixed by manually adding the "static-json" folder at .nuxt folder.
The problem caused by not making the folder at dev mode, I think.

Thanks.

[dpschen]

Based on the additional context I wrote a hacky workaround that seems to remove the warning for now:

  buildModules: [
    // [...]
    function createStaticJsonDirectory() {
      this.nuxt.hook('builder:prepared', () => {
        const fs = require('fs')
        const path = require('path')

        const dir = path.resolve(
          __dirname,
          this.options.buildDir,
          'static-json/'
        )

        if (!fs.existsSync(dir)) {
          fs.mkdirSync(dir)
        }
      })
    },
  ],

[avxkim]

This error is shown for me even in a dev environment. @danielroe can you take a look?