feat(tracing): Update to Web Vitals v3

[timfish]

Closes #5462

This merges in changes from Web Vitals v3.0.4 while maintaining the original changes and simplifications to the vendored code.

I have not carried across the file renames (ie. getXXX > onXXX) yet because they're not displayed as renames in the diffs.

Below is the web vitals changelog with the items I consider not relevant to this vendored code crossed out. The major change which probably needs considering in tracing is that it now detects prerendered pages. That PR suggests that these page loads should be considered differently to regular page loads since the metrics are likely to vary.

v3.0.3 (2022-10-04)

• Ensure attribution object is always present in attribution build (#265)

v3.0.2 (2022-09-14)

• Set an explicit unpkg dist file (#261)

v3.0.1 (2022-08-31)

• Use the cjs extension for all UMD builds (#257)

v3.0.0 (2022-08-24)

• [BREAKING] Add a config object param to all metric functions (#225)
• [BREAKING] Report TTFB after a bfcache restore (#220)
• [BREAKING] Only include last LCP entry in metric entries (#218)
• Update the metric ID prefix for v3 (#251)
• Move the Navigation Timing API polyfill to the base+polyfill build (#248)
• Add a metric rating property (#246)
• Add deprecation notices for base+polyfill builds (#242)
• Add a new attribution build for debugging issues in the field (#237, #244)
• Add support for prerendered pages (#233)
• Rename the ReportHandler type to ReportCallback, with alias for back-compat ([Fix Tracekit for firefox/xulrunner chrome code #225](Add a config object param to all metric functions GoogleChrome/web-vitals#225), #227)
• Add support for the new INP metric (#221, #232)
• Rename getXXX() functions to onXXX() (#222)
• Add a navigationType property to the Metric object (#219)

v2.1.4 (2022-01-20)

• Prevent TTFB from reporting after bfcache restore (#201)

v2.1.3 (2022-01-06)

• Only call report if LCP occurs before first hidden (#197)

v2.1.2 (2021-10-11)

• Ensure reported TTFB values are less than the current page time (#187)

v2.1.1 (2021-10-06)

• Add feature detects to support Opera mini in extreme data saver mode (#186)

[AbhiPrasad]

Let's make sure we update https://github.com/getsentry/sentry-javascript/blob/master/packages/tracing/src/browser/web-vitals/README.md as well.

[AbhiPrasad]

Reminder that we’ll need to update the readme in the web-vitals folder!

[timfish]

Reminder that we’ll need to update the readme in the web-vitals folder!

Was just on my way to do that and noticed they've already released 3.0.4 with a bug fix so I'll try and get that in first!

[AbhiPrasad]

Thanks Tim!