Add client HMR tracing for debugging

[ijjk]

This adds client HMR event tracing to help debug the client state for reproductions easier

[ijjk]

Stats from current PR

Default Build (Increase detected ⚠️)

General Overall increase ⚠️

	vercel/next.js canary	ijjk/next.js add/client-traces	Change
buildDuration	15.7s	15.5s	-172ms
buildDurationCached	6.1s	6.1s	-4ms
nodeModulesSize	485 MB	485 MB	⚠️ +8.04 kB

Page Load Tests Overall increase ✓

	vercel/next.js canary	ijjk/next.js add/client-traces	Change
/ failed reqs	0	0	✓
/ total time (seconds)	3.048	3.023	-0.02
/ avg req/sec	820.19	827.07	+6.88
/error-in-render failed reqs	0	0	✓
/error-in-render total time (seconds)	1.185	1.164	-0.02
/error-in-render avg req/sec	2108.94	2147.57	+38.63

Client Bundles (main, webpack)

	vercel/next.js canary	ijjk/next.js add/client-traces	Change
925.HASH.js gzip	179 B	179 B	✓
framework-HASH.js gzip	42 kB	42 kB	✓
main-HASH.js gzip	28.5 kB	28.5 kB	✓
webpack-HASH.js gzip	1.44 kB	1.44 kB	✓
Overall change	72.1 kB	72.1 kB	✓

Legacy Client Bundles (polyfills)

	vercel/next.js canary	ijjk/next.js add/client-traces	Change
polyfills-HASH.js gzip	31 kB	31 kB	✓
Overall change	31 kB	31 kB	✓

Client Pages

	vercel/next.js canary	ijjk/next.js add/client-traces	Change
_app-HASH.js gzip	1.36 kB	1.36 kB	✓
_error-HASH.js gzip	192 B	192 B	✓
amp-HASH.js gzip	309 B	309 B	✓
css-HASH.js gzip	327 B	327 B	✓
dynamic-HASH.js gzip	3.04 kB	3.04 kB	✓
head-HASH.js gzip	351 B	351 B	✓
hooks-HASH.js gzip	920 B	920 B	✓
image-HASH.js gzip	5.74 kB	5.74 kB	✓
index-HASH.js gzip	263 B	263 B	✓
link-HASH.js gzip	2.36 kB	2.36 kB	✓
routerDirect..HASH.js gzip	320 B	320 B	✓
script-HASH.js gzip	392 B	392 B	✓
withRouter-HASH.js gzip	319 B	319 B	✓
85e02e95b279..7e3.css gzip	107 B	107 B	✓
Overall change	16 kB	16 kB	✓

Client Build Manifests

	vercel/next.js canary	ijjk/next.js add/client-traces	Change
_buildManifest.js gzip	461 B	461 B	✓
Overall change	461 B	461 B	✓

Rendered Page Sizes

	vercel/next.js canary	ijjk/next.js add/client-traces	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	ijjk/next.js add/client-traces	Change
buildDuration	18.1s	18.1s	⚠️ +39ms
buildDurationCached	6.1s	6s	-94ms
nodeModulesSize	485 MB	485 MB	⚠️ +8.04 kB

Page Load Tests Overall decrease ⚠️

	vercel/next.js canary	ijjk/next.js add/client-traces	Change
/ failed reqs	0	0	✓
/ total time (seconds)	3.029	3.004	-0.02
/ avg req/sec	825.47	832.25	+6.78
/error-in-render failed reqs	0	0	✓
/error-in-render total time (seconds)	1.156	1.163	⚠️ +0.01
/error-in-render avg req/sec	2162.79	2149.54	⚠️ -13.25

Client Bundles (main, webpack)

	vercel/next.js canary	ijjk/next.js add/client-traces	Change
925.HASH.js gzip	178 B	178 B	✓
framework-HASH.js gzip	42.3 kB	42.3 kB	✓
main-HASH.js gzip	28.9 kB	28.9 kB	✓
webpack-HASH.js gzip	1.45 kB	1.45 kB	✓
Overall change	72.8 kB	72.8 kB	✓

Legacy Client Bundles (polyfills)

	vercel/next.js canary	ijjk/next.js add/client-traces	Change
polyfills-HASH.js gzip	31 kB	31 kB	✓
Overall change	31 kB	31 kB	✓

Client Pages

	vercel/next.js canary	ijjk/next.js add/client-traces	Change
_app-HASH.js gzip	1.35 kB	1.35 kB	✓
_error-HASH.js gzip	179 B	179 B	✓
amp-HASH.js gzip	313 B	313 B	✓
css-HASH.js gzip	325 B	325 B	✓
dynamic-HASH.js gzip	3.02 kB	3.02 kB	✓
head-HASH.js gzip	351 B	351 B	✓
hooks-HASH.js gzip	921 B	921 B	✓
image-HASH.js gzip	5.78 kB	5.78 kB	✓
index-HASH.js gzip	261 B	261 B	✓
link-HASH.js gzip	2.44 kB	2.44 kB	✓
routerDirect..HASH.js gzip	322 B	322 B	✓
script-HASH.js gzip	393 B	393 B	✓
withRouter-HASH.js gzip	317 B	317 B	✓
85e02e95b279..7e3.css gzip	107 B	107 B	✓
Overall change	16.1 kB	16.1 kB	✓

Client Build Manifests

	vercel/next.js canary	ijjk/next.js add/client-traces	Change
_buildManifest.js gzip	457 B	457 B	✓
Overall change	457 B	457 B	✓

Rendered Page Sizes

	vercel/next.js canary	ijjk/next.js add/client-traces	Change
index.html gzip	530 B	530 B	✓
link.html gzip	544 B	544 B	✓
withRouter.html gzip	526 B	526 B	✓
Overall change	1.6 kB	1.6 kB	✓

Commit: 8bbb67d