Implement Grant Bookmarking

[Abd-Standard]

Description:
Allow users to save grants they are interested in and access them later from a dedicated bookmarks section.

Acceptance Criteria:

Users can bookmark and remove grants.
Saved grants persist across sessions.
A dedicated bookmarked grants page is available.

[ranjeet150]

Hi maintainers,

I would like to resolve this issue. Here is my proposed execution plan:

• Implementation: Implement Implement Grant Bookmarking with modular design, clear documentation, and clean commit history.
• Testing: Include automated test coverage verifying the implementation meets expected requirements.

Happy to pick this up today—please assign to me!