Packem v2 Updates and Changes

[prisis]

This ticket outlines the planned updates and changes for Packem v2.
The focus is on modernizing the bundler by removing legacy and outdated dependencies and features.

Tasks

• Remove support for node-sass
• Remove CommonJS (CJS) exports of Packem
• Remove rollup-plugin-polyfill-node
• Remove rollup-plugin-dts -> this was replaced with the isolated declarations
• Move node10Compatibility out of Rollup config
• Support .node files Support .node files #5
• add support for workers
• show type only file on the log output

worker = new Worker(new URL("./worker.js", import.meta.url), { type: "module" });
// or simply:
worker = new Worker("./worker.js", { type: "module" });

• isolated dts transformer should resolve inline/bundled types -> this is needed to fully replace the dts plugin
• Allow to set a builder before or after the core build
• Allow to change extension of cjs and mjs export files
• Add a benchmark between the most used bundlers
• add a new prebundle command

Css

• extend the stylus support -> check https://github.com/webpack-contrib/stylus-loader/blob/master/src/index.js
• improve the lightningcss support with css modules
• fix tests for less and sass
• add missing test for css dts support