Extract next-swc Rust code into its own package

[padmaia]

Extract rust code into its own package so that we can have more granular caching.

Related: #31464

[padmaia]

I believe the failing tests will not fail once this is merged into the canary branch. @ijjk can you confirm?

[ijjk]

Updated to ensure the binary is handled for isolated tests/PR stats. Looks good to land if the changes look alright to you 👍

[ijjk]

Stats from current PR

Default Build (Increase detected ⚠️)

General Overall increase ⚠️

	vercel/next.js canary	padmaia/next.js chore/next-swc-package	Change
buildDuration	17.9s	18.1s	⚠️ +201ms
buildDurationCached	3.6s	3.6s	-17ms
nodeModulesSize	339 MB	339 MB	⚠️ +1.13 kB

Page Load Tests Overall increase ✓

	vercel/next.js canary	padmaia/next.js chore/next-swc-package	Change
/ failed reqs	0	0	✓
/ total time (seconds)	2.982	3.037	⚠️ +0.05
/ avg req/sec	838.24	823.1	⚠️ -15.14
/error-in-render failed reqs	0	0	✓
/error-in-render total time (seconds)	1.404	1.343	-0.06
/error-in-render avg req/sec	1780.2	1861.02	+80.82

Client Bundles (main, webpack, commons)

	vercel/next.js canary	padmaia/next.js chore/next-swc-package	Change
450.HASH.js gzip	179 B	179 B	✓
framework-HASH.js gzip	42.2 kB	42.2 kB	✓
main-HASH.js gzip	28.4 kB	28.4 kB	✓
webpack-HASH.js gzip	1.45 kB	1.45 kB	✓
Overall change	72.2 kB	72.2 kB	✓

Legacy Client Bundles (polyfills)

	vercel/next.js canary	padmaia/next.js chore/next-swc-package	Change
polyfills-HASH.js gzip	31 kB	31 kB	✓
Overall change	31 kB	31 kB	✓

Client Pages

	vercel/next.js canary	padmaia/next.js chore/next-swc-package	Change
_app-HASH.js gzip	1.37 kB	1.37 kB	✓
_error-HASH.js gzip	194 B	194 B	✓
amp-HASH.js gzip	312 B	312 B	✓
css-HASH.js gzip	327 B	327 B	✓
dynamic-HASH.js gzip	2.38 kB	2.38 kB	✓
head-HASH.js gzip	350 B	350 B	✓
hooks-HASH.js gzip	635 B	635 B	✓
image-HASH.js gzip	4.45 kB	4.45 kB	✓
index-HASH.js gzip	263 B	263 B	✓
link-HASH.js gzip	1.87 kB	1.87 kB	✓
routerDirect..HASH.js gzip	321 B	321 B	✓
script-HASH.js gzip	383 B	383 B	✓
withRouter-HASH.js gzip	318 B	318 B	✓
85e02e95b279..7e3.css gzip	107 B	107 B	✓
Overall change	13.3 kB	13.3 kB	✓

Client Build Manifests

	vercel/next.js canary	padmaia/next.js chore/next-swc-package	Change
_buildManifest.js gzip	460 B	460 B	✓
Overall change	460 B	460 B	✓

Rendered Page Sizes

	vercel/next.js canary	padmaia/next.js chore/next-swc-package	Change
index.html gzip	532 B	532 B	✓
link.html gzip	545 B	545 B	✓
withRouter.html gzip	527 B	527 B	✓
Overall change	1.6 kB	1.6 kB	✓

---

Default Build with SWC (Decrease detected ✓)

General Overall increase ⚠️

	vercel/next.js canary	padmaia/next.js chore/next-swc-package	Change
buildDuration	19.5s	19.6s	⚠️ +81ms
buildDurationCached	3.6s	3.6s	-71ms
nodeModulesSize	339 MB	339 MB	⚠️ +1.13 kB

Page Load Tests Overall decrease ⚠️

	vercel/next.js canary	padmaia/next.js chore/next-swc-package	Change
/ failed reqs	0	0	✓
/ total time (seconds)	2.986	2.962	-0.02
/ avg req/sec	837.24	844.13	+6.89
/error-in-render failed reqs	0	0	✓
/error-in-render total time (seconds)	1.374	1.38	⚠️ +0.01
/error-in-render avg req/sec	1819.24	1811.23	⚠️ -8.01

Client Bundles (main, webpack, commons)

	vercel/next.js canary	padmaia/next.js chore/next-swc-package	Change
450.HASH.js gzip	179 B	179 B	✓
framework-HASH.js gzip	42.3 kB	42.3 kB	✓
main-HASH.js gzip	28.6 kB	28.6 kB	✓
webpack-HASH.js gzip	1.44 kB	1.44 kB	✓
Overall change	72.5 kB	72.5 kB	✓

Legacy Client Bundles (polyfills)

	vercel/next.js canary	padmaia/next.js chore/next-swc-package	Change
polyfills-HASH.js gzip	31 kB	31 kB	✓
Overall change	31 kB	31 kB	✓

Client Pages

	vercel/next.js canary	padmaia/next.js chore/next-swc-package	Change
_app-HASH.js gzip	1.35 kB	1.35 kB	✓
_error-HASH.js gzip	180 B	180 B	✓
amp-HASH.js gzip	305 B	305 B	✓
css-HASH.js gzip	321 B	321 B	✓
dynamic-HASH.js gzip	2.38 kB	2.38 kB	✓
head-HASH.js gzip	342 B	342 B	✓
hooks-HASH.js gzip	622 B	622 B	✓
image-HASH.js gzip	4.47 kB	4.47 kB	✓
index-HASH.js gzip	256 B	256 B	✓
link-HASH.js gzip	1.91 kB	1.91 kB	✓
routerDirect..HASH.js gzip	314 B	314 B	✓
script-HASH.js gzip	375 B	375 B	✓
withRouter-HASH.js gzip	309 B	309 B	✓
85e02e95b279..7e3.css gzip	107 B	107 B	✓
Overall change	13.2 kB	13.2 kB	✓

Client Build Manifests

	vercel/next.js canary	padmaia/next.js chore/next-swc-package	Change
_buildManifest.js gzip	459 B	459 B	✓
Overall change	459 B	459 B	✓

Rendered Page Sizes

	vercel/next.js canary	padmaia/next.js chore/next-swc-package	Change
index.html gzip	532 B	532 B	✓
link.html gzip	545 B	545 B	✓
withRouter.html gzip	526 B	526 B	✓
Overall change	1.6 kB	1.6 kB	✓

Commit: cf98ea7