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.

infra/Cargo.toml

@@ -5,28 +5,16 @@ edition = "2024"
 
 [features]
 default = ["sqlite"]
-sqlite = [
-    "sqlx/sqlite",
-    "k-core/sqlite",
-    "tower-sessions-sqlx-store",
-    "k-core/sessions-db",
-]
-postgres = [
-    "sqlx/postgres",
-    "k-core/postgres",
-    "tower-sessions-sqlx-store",
-    "k-core/sessions-db",
-]
+sqlite = ["sqlx/sqlite", "k-core/sqlite"]
+postgres = ["sqlx/postgres", "k-core/postgres"]
 broker-nats = ["dep:futures-util", "k-core/broker-nats"]
-auth-axum-login = ["dep:axum-login", "dep:password-auth"]
-auth-oidc = ["dep:openidconnect", "dep:url"]
+auth-oidc = ["dep:openidconnect", "dep:url", "dep:axum-extra"]
 auth-jwt = ["dep:jsonwebtoken"]
 
 [dependencies]
 k-core = { git = "https://git.gabrielkaszewski.dev/GKaszewski/k-core", features = [
     "logging",
     "db-sqlx",
-    "sessions-db",
 ] }
 domain = { path = "../domain" }
 
@@ -38,19 +26,17 @@ anyhow = "1.0"
 tokio = { version = "1.48.0", features = ["full"] }
 tracing = "0.1"
 uuid = { version = "1.19.0", features = ["v4", "serde"] }
-tower-sessions-sqlx-store = { version = "0.15.0", optional = true }
 serde_json = "1.0"
 serde = { version = "1.0", features = ["derive"] }
+futures-core = "0.3"
+password-auth = "1.0"
+
+# Optional dependencies
 async-nats = { version = "0.45", optional = true }
 futures-util = { version = "0.3", optional = true }
-futures-core = "0.3"
-tower-sessions = "0.14"
-
-# Auth dependencies (optional)
-axum-login = { version = "0.18", optional = true }
-password-auth = { version = "1.0", optional = true }
 openidconnect = { version = "4.0.1", optional = true }
 url = { version = "2.5.8", optional = true }
+axum-extra = { version = "0.10", features = ["cookie-private"], optional = true }
 jsonwebtoken = { version = "10.2.0", features = [
     "sha2",
     "p256",