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/Cargo.toml

@@ -4,17 +4,13 @@ version = "0.1.0"
 edition = "2024"
 
 [dependencies]
-anyhow = "1.0.100"
 async-trait = "0.1.89"
 chrono = { version = "0.4.42", features = ["serde"] }
 email_address = "0.2"
 serde = { version = "1.0.228", features = ["derive"] }
-serde_json = "1.0.146"
 thiserror = "2.0.17"
-tracing = "0.1"
 url = { version = "2.5", features = ["serde"] }
 uuid = { version = "1.19.0", features = ["v4", "serde"] }
-futures-core = "0.3"
 
 [dev-dependencies]
 tokio = { version = "1", features = ["rt", "macros"] }