feat: moved react packages to their domain, added the launchpad tier

[advl]

Done

• Renamed ds-react-core to react-ds-core

• Moved packages/react-ds-core to packages/react/ds-core

• Copied paclages/react/ds-core to packages/react/ds-app-launchpad

• (Other) removed generator-canonical-ds from apps, which was an older, archived version

• Added new workspace entries in main package.json

(Excluded - Renamed boilerplate-react-vite to boilerplate-vite and moved to apps/react/boilerplate-vite)

QA

• bun i should work fine
• cd packages/react/ds-core and bun run storybook, bun run build should work fine
• cd packages/react/ds-app-launchpad and bun run storybook, bun run build should work fine

PR readiness check

• PR should have one of the following labels:
  • Feature 🎁, Breaking Change 💣, Bug 🐛, Documentation 📝, Maintenance 🔨.
• All packages define the required scripts in package.json:
  • All packages: check, check:fix, and test.
  • Packages with a build step: build.