feat(nitro): Handle sourcemap preparation and upload

[logaretm]

Adds automatic sourcemap handling to the Nitro SDK, using @sentry/bundler-plugin-core for builder-agnostic post-build upload.

Nitro uses rollup or rolldown, so it made sense to make it as agnostic as possible.

Closes #17992

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This PR is part of a stack:

• feat(nitro): Nitro SDK entry and metadata #19224
• feat(nitro): Instrument HTTP Server #19225
• feat(nitro): Handle sourcemap preparation and upload #19304 👈

[linear]

JS-1076 [Nitro] Upload sourcemaps

[github-actions]

Codecov Results 📊

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[github-actions]

size-limit report 📦

Path	Size	% Change	Change
@sentry/browser	25.56 kB	added	added
@sentry/browser - with treeshaking flags	24.08 kB	added	added
@sentry/browser (incl. Tracing)	42.36 kB	added	added
@sentry/browser (incl. Tracing, Profiling)	47.03 kB	added	added
@sentry/browser (incl. Tracing, Replay)	81.18 kB	added	added
@sentry/browser (incl. Tracing, Replay) - with treeshaking flags	70.8 kB	added	added
@sentry/browser (incl. Tracing, Replay with Canvas)	85.87 kB	added	added
@sentry/browser (incl. Tracing, Replay, Feedback)	98.03 kB	added	added
@sentry/browser (incl. Feedback)	42.29 kB	added	added
@sentry/browser (incl. sendFeedback)	30.23 kB	added	added
@sentry/browser (incl. FeedbackAsync)	35.22 kB	added	added
@sentry/browser (incl. Metrics)	26.74 kB	added	added
@sentry/browser (incl. Logs)	26.88 kB	added	added
@sentry/browser (incl. Metrics & Logs)	27.56 kB	added	added
@sentry/react	27.33 kB	added	added
@sentry/react (incl. Tracing)	44.72 kB	added	added
@sentry/vue	30.01 kB	added	added
@sentry/vue (incl. Tracing)	44.21 kB	added	added
@sentry/svelte	25.58 kB	added	added
CDN Bundle	28.11 kB	added	added
CDN Bundle (incl. Tracing)	43.2 kB	added	added
CDN Bundle (incl. Logs, Metrics)	28.95 kB	added	added
CDN Bundle (incl. Tracing, Logs, Metrics)	44.03 kB	added	added
CDN Bundle (incl. Replay, Logs, Metrics)	68.02 kB	added	added
CDN Bundle (incl. Tracing, Replay)	80.07 kB	added	added
CDN Bundle (incl. Tracing, Replay, Logs, Metrics)	80.94 kB	added	added
CDN Bundle (incl. Tracing, Replay, Feedback)	85.5 kB	added	added
CDN Bundle (incl. Tracing, Replay, Feedback, Logs, Metrics)	86.4 kB	added	added
CDN Bundle - uncompressed	82.22 kB	added	added
CDN Bundle (incl. Tracing) - uncompressed	127.93 kB	added	added
CDN Bundle (incl. Logs, Metrics) - uncompressed	85.05 kB	added	added
CDN Bundle (incl. Tracing, Logs, Metrics) - uncompressed	130.76 kB	added	added
CDN Bundle (incl. Replay, Logs, Metrics) - uncompressed	208.71 kB	added	added
CDN Bundle (incl. Tracing, Replay) - uncompressed	244.81 kB	added	added
CDN Bundle (incl. Tracing, Replay, Logs, Metrics) - uncompressed	247.63 kB	added	added
CDN Bundle (incl. Tracing, Replay, Feedback) - uncompressed	257.61 kB	added	added
CDN Bundle (incl. Tracing, Replay, Feedback, Logs, Metrics) - uncompressed	260.42 kB	added	added
@sentry/nextjs (client)	47.04 kB	added	added
@sentry/sveltekit (client)	42.81 kB	added	added
@sentry/node-core	52.17 kB	added	added
@sentry/node	166.52 kB	added	added
@sentry/node - without tracing	93.97 kB	added	added
@sentry/aws-serverless	109.47 kB	added	added