feat(validator): Introduce `responseValidator` #6151

Job	Run time
Deno	13s
Bun	4s
Checking if it's valid for JSR	10s
Fastly Compute	47s
AWS Lambda	48s
Lambda@Edge	47s
Main	12s
Node.js v18.18.2	49s
Type & Bundle size Check on PR	55s
workerd	50s
Node.js v20.x	45s
Node.js v22.x	47s
Type & Bundle size Check on Main	0s
Coverage	0s
	7m 7s

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