feat: Compress Vite output by default in production

[Artur-]

As Brotli is disabled by default, you need to enable it to use this feature.
#4740 will enable Brotli by default once server issues are sorted out

Fixes #12055

[caalador]

Something is failing on the application start now:

It's clearly loading, but I don't think that is the expected result for the page.

[Artur-]

Updated to use rollup-plugin-brotli which is compatible with Vite. rollup-plugin-gzip compresses the output files in generateBundle and Vite still modifies the files after that plugin phase. rollup-plugin-brotli gathers the file names in generateBundle and compresses them in writeBundle which seemingly work correctly with Vite

[vaadin-bot]

This ticket/PR has been released with platform 22.0.0.beta2 and is also targeting the upcoming stable 22.0.0 version.