Add repository fork count to package comparison view

[BittuBarnwal7479]

Describe the feature

The comparison page shows several repository metrics, but it’s missing fork count. Forks are an important signal of community interest and real-world adoption. Adding a Forks row to the comparison table would make it easier for users to compare packages at a glance without leaving the page.

Additional information

• Would you be willing to help implement this feature?

Final checks

• Read the contribution guide.
• Check existing issues.

[BittuBarnwal7479]

[BittuBarnwal7479]

This issue can be closed as #2907 fixed.