Svelte SDK Alpha Release 1.0

Done:

• [x] Create boilerplate package for @sentry/svelte (#5535)
• [x] Add instrumentation for client side errors (for now, just a wrapper around the browser JS SDK) (#5543)
• [x] Add basic unit tests (#5543)
• [x] Add README with instructions (#5544)
• [x] Validate that sourcemaps work properly with .svelte files
• [x] Verify NPM package structure and contents
• [x] Un-private Package in package.json (https://github.com/getsentry/sentry-javascript/pull/5554)

In Review:

• [ ] [merge before release] Add @sentry/svelte to the release registry
  • (https://github.com/getsentry/sentry-release-registry/pull/80)
  • https://github.com/getsentry/sentry-javascript/pull/5547

In Progress:

• [ ] (Doesn't block release) Draft docs to docs.sentry.io/ (guide + wizard)

To do:

• [ ] (Doesn't block release) Figure out how to dog food

Alpha released with https://github.com/getsentry/sentry-javascript/releases/tag/7.10.0: https://www.npmjs.com/package/@sentry/svelte