- Add api.rs with all web-specific API functions
- Add admin_login and validate_admin_token methods to ChurchApiClient
- Add image fields to EventSubmission model
- Add submit_event_with_image and submit_event_multipart functions
- Update test files for new EventSubmission fields
This consolidates the web church-core into the main crate to achieve single source of truth.
Add church management API library with cross-platform support for iOS, Android, and WASM.
Features include event management, bulletin handling, contact forms, and authentication.