Event processor migration: Sveltekit span processing

[Lms24]

packages/sveltekit/src/server-common/integrations/svelteKitSpans.ts

We process spans emitted by sveltekit to sentry-fy them a bit. We can probably do this in processSpan for span streaming and adjust _enhanceKitSpana bit.

[linear-code]

JS-2207