build: use esbuild to speedup building vite package

[ArnaudBarre]

Build

• Keep current rollup configuration, but used it only for build.
• Switch to esbuild to transpile TS
• Remove client source maps. This is something we discussed a long ago with @patak-dev in a meeting with some members of Google devtools team. It will make vite client less prominent in the devtools and stacktrace for us will still be fine, the current output is still very close of the code source
• Types:
  • generate types for src/node: avoid lib check, also avoid using features not available in node18
  • roll: no change, use esbuild to load the config
  • tsc check: reduce typing scope
• Build time on my machine: 20.5s -> 8s

I manually diffed the two dist folders, changes are only a matter of line breaks, less comments, use double quote or other esbuild related formatting

Dev

• Use esbuild with external dev deps (as before) but without chunking. It generates two index.js & cli.js of ~600kbs which is fine
• The only downside is the handling of require call inlined worker. This is one of the many reason that we can't use esbuild for build until we get a full ESM story for Vite I think
• Startup time: 8s to 300ms
• Rebuild: 4s to instant
• Types: not working (because directory output too nested) -> add a small proxy to the source code types

The full test suite is passing with the dev mode on

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