feat: enhance application state management with cookie support

- Added cookie key to AppState for managing session cookies.
- Updated AppState initialization to derive cookie key from configuration.
- Removed session-based authentication option from cargo-generate prompts.
- Refactored JWT authentication logic to improve clarity and error handling.
- Updated password validation to align with NIST recommendations (minimum length increased).
- Removed unused session store implementation and related code.
- Improved error handling in user repository for unique constraint violations.
- Refactored OIDC service to include state management for authentication flow.
- Cleaned up dependencies in Cargo.toml and Cargo.toml.template for clarity and efficiency.

domain/src/repositories.rs

@@ -1,5 +1,5 @@
 //! Reference Repository ports (traits)
-//! 
+//!
 //! These traits define the interface for data persistence.
 
 use async_trait::async_trait;