Generate Theme Variables

Get variables by Figma API is limited, so we've to update variables manually

1. Open Design System 2024 in Figma
2. Run Figma Plugin Variables2css
3. Select Collections
4. Switch to Config and select json Type
5. Generate and Copy
6. Paste json to packages/theme/src/v2/source/variables.json
7. Run pnpm run start and select Generate Theme Variables