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/presentation/Cargo.toml

@@ -14,6 +14,7 @@ thiserror = { workspace = true }
 tracing = { workspace = true }
 tracing-subscriber = { workspace = true }
 tokio = { workspace = true }
+dotenvy = { workspace = true }
 uuid = { workspace = true }
 chrono = { workspace = true }
 async-trait = { workspace = true }