feat: Add government scheme finder

[magic-peach]

This PR implements a comprehensive government scheme finder system for farmers.

Features Implemented

Government Scheme Database

• Added GovernmentScheme model with scheme details, eligibility criteria, benefits, and deadlines
• Supports filtering by ministry, region, and date ranges
• Search functionality by keyword across scheme name, description, and ministry

Eligibility Checker

• Automatic eligibility scoring based on farm size, income, and location
• Returns detailed eligibility notes and percentage score
• Considers scheme-specific requirements like farm size limits, income caps, and regional restrictions

Application Assistance

• Step-by-step application guidance
• Document checklist with required documents
• Timeline suggestions for optimal submission
• Contact information and tips for successful applications

Application Management

• Create and manage scheme applications
• Track application status (draft, submitted, under_review, approved, rejected)
• Store application data and submitted documents
• History of all user applications

Deadline Reminders

• Automatic reminder creation for upcoming deadlines
• Multiple reminder intervals (30, 15, 7, 3, 1 days before deadline)
• Upcoming deadlines endpoint for all schemes within specified time range

API Endpoints

• GET /api/v1/government-schemes - List all schemes with optional filters
• GET /api/v1/government-schemes/search - Search schemes by keyword
• GET /api/v1/government-schemes/{id} - Get scheme details
• POST /api/v1/government-schemes/{id}/eligibility - Check eligibility
• GET /api/v1/government-schemes/{id}/assistance - Get application assistance
• POST /api/v1/government-schemes/applications - Create application
• POST /api/v1/government-schemes/applications/{id}/submit - Submit application
• GET /api/v1/government-schemes/applications/user/{id} - Get user applications
• GET /api/v1/government-schemes/deadlines - Get upcoming deadlines
• POST /api/v1/government-schemes/{id}/reminders - Create deadline reminders

Files Added

• backend/models/government_schemes.py - Database models
• backend/services/government_scheme_service.py - Business logic service
• backend/api/v1/government_schemes.py - API endpoints

Files Modified

• backend/models/init.py - Added model exports
• backend/api/v1/init.py - Registered new blueprint

Fixes #1673

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[github-actions]

Thanks for creating a PR for your Issue! ☺️

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In the meantime, please double-check the file changes and ensure that all commits are accurate.

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[omroy07]

Conflict

[magic-peach]

Done

[github-actions]

🎉 Congrats @magic-peach on getting your PR merged! 🙌
Thanks for the contribution — looking forward to more from you 🚀