chore(utils): Add license to vendor attribution

[AbhiPrasad]

ref #7560

Adds license to top of vendored code. When necessary pulls vendored code into it's own file as per our policies.

[github-actions]

size-limit report 📦

Path	Size
@sentry/browser - ES5 CDN Bundle (gzipped + minified)	20.62 KB (+0.06% 🔺)
@sentry/browser - ES5 CDN Bundle (minified)	64.4 KB (+0.02% 🔺)
@sentry/browser - ES6 CDN Bundle (gzipped + minified)	19.15 KB (-0.03% 🔽)
@sentry/browser - ES6 CDN Bundle (minified)	56.78 KB (+0.02% 🔺)
@sentry/browser - Webpack (gzipped + minified)	21.53 KB (-0.39% 🔽)
@sentry/browser - Webpack (minified)	72 KB (-0.04% 🔽)
@sentry/react - Webpack (gzipped + minified)	21.55 KB (-0.39% 🔽)
@sentry/nextjs Client - Webpack (gzipped + minified)	51.97 KB (-0.03% 🔽)
@sentry/browser + @sentry/tracing - ES5 CDN Bundle (gzipped + minified)	28.15 KB (+0.04% 🔺)
@sentry/browser + @sentry/tracing - ES6 CDN Bundle (gzipped + minified)	26.36 KB (+0.04% 🔺)
@sentry/replay ES6 CDN Bundle (gzipped + minified)	44.48 KB (+0.02% 🔺)
@sentry/replay - Webpack (gzipped + minified)	38.54 KB (0%)
@sentry/browser + @sentry/tracing + @sentry/replay - ES6 CDN Bundle (gzipped + minified)	63.12 KB (+0.01% 🔺)
@sentry/browser + @sentry/replay - ES6 CDN Bundle (gzipped + minified)	56.23 KB (+0.02% 🔺)