@next/bundle-analyzer should allow for all webpack-bundle-analyzer options to be configured

[PandelisZ]

Goals

1. add an options property to @next/bundle-analyzer
2. allow users to pass analyzerMode: 'json' to the plugin
3. configure the json export correctly to match the existing HTML export logic

Non-Goals

Background

As a frontend engineer working with next we obsess over every byte sent to the user.

I would like the ability to easily generate metrics from form the output of webpack-bundle-analyzer so that we can closely monitor our bundle size on a per-commit/per-pr basis.

The generated HTML is a great visual indicator but I would like something machine readable so that we can be very strict about what we ship.

Proposal

#48895

I would like to expand @next/bundle-analyzer to accept all options exposed by webpack-bundle-analyzer

require('@next/bundle-analyzer')({
  enabled: process.env.ANALYZE === 'true',
  analyzerMode: process.env.ANALYZE_JSON === 'true' ? 'json' : 'server',
  analyzerHost,
  analyzerPort ,
  analyzerUrl ,
  reportFilename,
  reportTitle,
  defaultSize,
  openAnalyzer,
  generateStatsFile,
  statsFilename,
  statsOptions,
  excludeAssets,
  logLevel,
})