Add JSON report format

[Ansh5748]

What happened

Reports only available in text format

What did you expect to happen

• Option to output JSON reports
• Structured data format
• Machine-readable results

How to reproduce

1. Generate report
2. Check report format

Error messages and logs

N/A - Feature request

[Ansh5748]

I'll add JSON report functionality.

Implementation Details:

1. Code Changes:

   • Create JSON report generator
   • Implement report schema
   • Add format selection

2. New Files:

   • json_reporter.py: JSON generation
   • report_schema.json: Schema definition

3. Modified Files:

   • report_generator.py: Add JSON support
   • main.py: Add format option

4. Testing Strategy:

   • Validate JSON structure
   • Test all report types
   • Check schema compliance

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