[FEATURE] Add PDF Download option

[SrijaChinthakunta]

Feature Description

Add a PDF download option for study materials so users can download and save learning content directly to their devices. The downloaded PDF should contain the complete study material with proper formatting, headings, and readable content for offline access.

Problem It Solves

Currently, users can only access study materials through the web interface. This creates several limitations:

• Users cannot access content without an internet connection.
• Students cannot easily save materials for future reference.
• Revision becomes difficult when internet access is unavailable.
• Users cannot print study materials for physical study sessions.
• Reading long content online continuously may be inconvenient for some students.

Providing a PDF download option will improve accessibility and enhance the learning experience.

Proposed Solution

Implement a "Download PDF" button on each study material page.

Suggested Workflow:

1. User opens a study material.

2. A Download PDF button is displayed near the title or action menu.

3. When clicked:

   • The study material content is converted into a properly formatted PDF.
   • The PDF is generated on the server (or client side if preferred).
   • The file is automatically downloaded to the user's device.

4. The PDF should preserve:

   • Titles and headings
   • Paragraph formatting
   • Lists and tables (if present)
   • Images and diagrams (if available)

Additional Considerations:

• Use meaningful filenames (e.g., Data_Structures_Unit_1.pdf).
• Ensure mobile and desktop compatibility.
• Handle large study materials efficiently.

Additional Context

Example User Story

As a student, I want to download study materials as PDFs so that I can study offline, revise during travel, and print notes when needed.

Expected UI

Study Material Title
--------------------------------
[Read Online]   [Download PDF]

Benefits

• Offline learning support
• Easier revision
• Better accessibility
• Ability to print study materials
• Improved user experience

[omprakash-sahu-code]

/assign

Hi @pushkarscripts
Can you assign this feature to me?
I would like to work on it under GSSoC26