chore: try webpack -> esbuild

[lkraav]

Initial tests show

• build speed difference is cosmic
• cxl-marketing-nav has suspect code in firstUpdate()
• index-jwplayer fails with require('stream')
• ☝️ Subpath import uses Node.js version of sources when bundling for web evanw/esbuild#2065
• ☝️ How to find the path trace of a bad import? evanw/esbuild#1904
• ☝️ Problems with replacing Node modules with corresponding browser ones. evanw/esbuild#772
• ...