build: bundle dependencies to reduce install size

[pi0]

(experimental draft)

This is an experimental attempt in order to reduce the total install size of nitro.

What is bundled: (check build.config)

What is not bundled:

• Runtime dependencies
• Native dependencies
• Incompatible to bundle
• Deps used by presets
• Common deps

---

Results:

• Before: 74MB / 5,415 files
• After: 48MB / 3,300 files

bundled dist+deps: 4.6MB

Breakdown of remaining external deps: (linux/pnpm -- total is 49MB ignoring 1MB of overlaps for simplicity)

• utils: 2.6MB (croner, globby, klona, unplugin)
• error: 2.1MB (youch youch/core source-map)
• rollup (without plugins): 7.7MB
• esbuild: 10MB
• @vercel/nft: 10MB
• unjs: 12MB (confbox consola compatx cookie-es crossws db0 defu destr h3 hookable jiti node-mock-http mlly pathe pkg-types ofetch ohash radix3 scule std-env ufo uncrypto unctx unenv unstorage)

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[pi0]

reworking with progressive attempts starting with #3619