feat(cloudflare): enable native node.js compatibility

[pi0]

This PR enables cloudflare_pages and cloudflare_module (with recent compatibility date) to leverage from Native Node.js APIs implemented in workerd instead of using unenv mocks.

Due to versioning issues, breaking changes of unenv v2, and different implementations of @cloudflare/unenv-preset (WIP), this PR duplicates hybrid modules and overlay preset for now.

Utils related to direct fetch and node:http emulation is still used from unenv v1.

Workerd nodejs_compatibility can now be safely enabled using generated compatibility_flags thanks to #2949 and work by @petebacondarwin ❤️

Current issue: Hybrid modules need process.getBuiltinModule which needs nodejs_compat_v2 compatibility flag being passed to workerd however, it also affects wrangler behavior to do additional transforms which are incompatible with nitro. There is no_nodejs_compat_v2 however, it is mutually exclusive and nodejs_compat alone does not enables getBuiltinModule (workaround with an alternative method for hybrid handling) -- we miss some benefits of cloudflare/workerd#2147 (globals still injected from native)

🚀 Bundle size improvement

As we can use workerd native built-ins, a minimal project size reduces from 132 kB (41.1 kB gzip) to 98.1 kB (32.3 kB gzip) (-33.9KB (8.8kB gz) / -25.6% (21.4% gz))

📦 Modules

Hybrid modules:

• node:async_hooks (missing asyncWrapProviders)
• node:crypto (missing hash)
• node:util / node:sys (missing parseEnv and styleText)
• node:module (incompatible with unenv v1)
• node:console (incompatible with unenv v1)
• node:process (incompatible with unenv v1)

Native modules: (unenv polyfill will be replaced by workerd)

• node:assert, node:assert/strict
• node:buffer
• node:diagnostics_channel
• node:dns, node:dns/promises
• node:events
• node:net
• node:path, node:path/posix, node:path/win32
• node:querystring
• node:stream, node:stream/consumers, node:stream/promises, node:stream/web
• node:string_decoder
• node:timers, node:timers/promises
• node:url
• node:util/types
• node:zlib
• node:_stream_duplex
• node:_stream_passthrough
• node:_stream_readable
• node:_stream_transform
• node:_stream_writable

[pi0]

TODO (perhaps in other PR): when merging, we should transform relative paths. (or override assets)