Fix github stars endpoint (#5301)

- Encapsulated GitHub star response in an object
- Fixed rounding of Github stars to align with Github convention
- Fixed CORS issue so that endpoint can be called from twenty.com and
app.twenty.com

Co-authored-by: Ady Beraud <a.beraud96@gmail.com>

packages/twenty-website/src/shared-utils/formatNumberOfStars.ts

@@ -1,3 +1,3 @@
 export const formatNumberOfStars = (numberOfStars: number) => {
-  return Math.floor(numberOfStars / 100) / 10 + 'k';
+  return Math.ceil(numberOfStars / 100) / 10 + 'k';
 };