feat(auth): implement JWT authentication and user registration

- Added JWT authentication with token generation and validation.
- Introduced user registration functionality with email and password.
- Integrated Argon2 for password hashing.
- Created SQLite user repository for user data persistence.
- Updated application context to include user repository and configuration settings.
- Added environment variable support for JWT secret and registration allowance.
- Enhanced error handling for unauthorized access and validation errors.
- Updated presentation layer to handle login and registration requests.

crates/application/src/use_cases/mod.rs

@@ -1,4 +1,6 @@
 pub mod get_diary;
 pub mod get_review_history;
 pub mod log_review;
+pub mod login;
+pub mod register;
 pub mod sync_poster;