Create bundle size analysis report on build #817
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I think there is room for improvements in distribution bundle size, as zxing is currently distributed directly here as UMD.
We could possibly be in a better situation if we could use @zxing/library which is released as ESM modules nowadays.
As a helper for that possible endeavor this webpack-bundle-analyzer
plugin creates a static HTML page to dist/report.html during build.
Screenshot of the HTML view:
![Screenshot 2023-08-11 at 10 06 13](https://private-user-images.githubusercontent.com/2378802/259946016-8401c4eb-88d6-4323-bc48-f809b2662aa9.png?jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.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.vh71M1b2GXJRSa0yv0A_pRSOyTfb4gho9djz9FixilE)