Resources page

[fatmahussein]

Summary

Adds a new Community Resources feature that allows users to browse and submit resources, while providing administrators with tools to manage submitted content.

Changes
Backend

• Add Resource model with: Title, URL, description, category and submitted fields
• Add ResourcePolicy for admin-only resource management
• Add Admin::ResourcesController with CRUD functionality
• Add Api::ResourcesController with:
  • Resource listing endpoint
  • Category filtering support
  • Resource submission endpoint
• Add resources page action to SiteController

Admin

• Add resource management section to admin navigation
• Add paginated resource listing
• Enable create, update and delete operations

Frontend

• Add Resources page React application
• Add API datasource methods:
  • getResources
  • submitResource
• Add category filtering UI
• Add resource cards and listing view
• Add resource submission workflow
• Add success and error feedback banners
• Add reusable modal component
• Add resources page entrypoint and stylesheet bundle

Navigation

• Add Resources link to site header
• Add Community Resources link to footer

Tests Added/Updated

• System test for resources page (user browsing + submission flow)
• Admin system specs for CRUD operations
• Model specs for:
  • validations (presence, inclusion, URL format)
  • FactoryBot resource factory using Faker
  • Updated site navigation system spec to include /resources