feat(gatsby): Allow reporters to add metadata to logs

[imjoshin]

Description

This change allows us to report metadata alongside logs. Optionally passing a meta arg to our log methods will pass that data onto redux to be consumed later on. A method was added (addMetadata) to our reporter to add persistent metadata that's passed with every request.

Adding the following to our redux action shows how this metadata appears:

process.stdout.write(JSON.stringify({ level, text, meta }, null, 2) + `\n`)

success Execute page configs - 0.033s                                                                                                                        {                                                                                                                                                              "level": "ACTIVITY_SUCCESS",
  "text": "Caching Webpack compilations",
  "meta": {
    "versions": {
      "gatsby": "4.22.0-next.4-dev-1660764647375"
    }
  }
}
success Caching Webpack compilations - 0.000s                                                                                                                {
  "level": "ACTIVITY_SUCCESS",
  "text": "run queries in workers",
  "meta": {
    "versions": {
      "gatsby": "4.22.0-next.4-dev-1660764647375"
    }
  }
}
success run queries in workers - 0.038s - 1/1 26.54/s                                                                                                        {
  "level": "ACTIVITY_SUCCESS",
  "text": "Merge worker state",
  "meta": {
    "versions": {
      "gatsby": "4.22.0-next.4-dev-1660764647375"
    }
  }
}
success Merge worker state - 0.003s                                                                                                                          {
  "level": "ACTIVITY_SUCCESS",
  "text": "Writing page-data.json files to public directory",
  "meta": {
    "versions": {
      "gatsby": "4.22.0-next.4-dev-1660764647375"
    }
  }
}

This is like #35223, but adds persistent data and removes the silent log level.

[imjoshin]

Going to move this to just be on activities... Please hold. ⚠️

[LekoArts]

Closing out as stale