Extract the changelog into a separate application

[lforst]

Problem Statement

We would like to separate the changelog from the docs logically to reduce the complexity of the Docs Next.js application and to be a little bit more agile with regards to using new Next.js versions and SDK features.

Solution Brainstorm

Tasks

Beta Give feedback

1. Duplicate changelog into a workspace package as a separate Next.js application without depending on the docs (ref(changelog): Duplicate changelog into workspace package #10818)
2. Host duplicated changelog application on Vercel
3. Point changelog.sentry.io to the new changelog https://github.com/getsentry/static-sites/pull/2688
4. Add back proper Sentry SDK to changelog and create a project for it in Sentry feat(changelog): Add Sentry SDK #10824
5. Remove old changelog code ref: Remove old changelog code #10889
6. Bump Next.js & SDK to canary & latest deps(changelog): Bump Next.js to canary and Sentry SDK to latest #10876