feat(sveltekit): Add wrapServerRouteWithSentry wrapper

[Lms24]

Quick side-quest: This PR adds a wrapper for SvelteKit server routes. The reason is that some errors (e.g. sveltekit error() calls) are not caught within server (API) routes, as reported in #13224 because in contrast to load function we don't directly try/catch the function invokation.

For now, users will have to add this wrapper manually. At a later time we can think about auto instrumentation, similarly to load functions but for now this will remain manual.

This wrapper:

• starts a span for the server route
• captures "normal" Error-like errors
• captures error() errors if the status is >=500

Usage example:

import { wrapServerRouteWithSentry } from '@sentry/sveltekit';
import { error } from '@sveltejs/kit';

export const GET = wrapServerRouteWithSentry(async () => {
  error(500, 'error() error');
});

Resulting span:

Related changes:

• extracted sendErrorToSentry as it's universally used in server-side wrappers
• added unit tests
• added e2e test

closes #13224

docs PR: getsentry/sentry-docs#10990

[github-actions]

size-limit report 📦

Path	Size
@sentry/browser	22.47 KB (0%)
@sentry/browser (incl. Tracing)	34.26 KB (0%)
@sentry/browser (incl. Tracing, Replay)	70.31 KB (0%)
@sentry/browser (incl. Tracing, Replay) - with treeshaking flags	63.64 KB (0%)
@sentry/browser (incl. Tracing, Replay with Canvas)	74.71 KB (0%)
@sentry/browser (incl. Tracing, Replay, Feedback)	87.32 KB (0%)
@sentry/browser (incl. Tracing, Replay, Feedback, metrics)	89.16 KB (0%)
@sentry/browser (incl. metrics)	26.77 KB (0%)
@sentry/browser (incl. Feedback)	39.42 KB (0%)
@sentry/browser (incl. sendFeedback)	27.09 KB (0%)
@sentry/browser (incl. FeedbackAsync)	31.75 KB (0%)
@sentry/react	25.24 KB (0%)
@sentry/react (incl. Tracing)	37.25 KB (0%)
@sentry/vue	26.62 KB (0%)
@sentry/vue (incl. Tracing)	36.1 KB (0%)
@sentry/svelte	22.61 KB (0%)
CDN Bundle	23.69 KB (0%)
CDN Bundle (incl. Tracing)	35.93 KB (0%)
CDN Bundle (incl. Tracing, Replay)	70.36 KB (0%)
CDN Bundle (incl. Tracing, Replay, Feedback)	75.61 KB (0%)
CDN Bundle - uncompressed	69.52 KB (0%)
CDN Bundle (incl. Tracing) - uncompressed	106.43 KB (0%)
CDN Bundle (incl. Tracing, Replay) - uncompressed	218.27 KB (0%)
CDN Bundle (incl. Tracing, Replay, Feedback) - uncompressed	231.16 KB (0%)
@sentry/nextjs (client)	37.1 KB (0%)
@sentry/sveltekit (client)	34.81 KB (0%)
@sentry/node	115.07 KB (-0.36% 🔽)
@sentry/node - without tracing	89.43 KB (-0.48% 🔽)
@sentry/aws-serverless	98.85 KB (-0.46% 🔽)