feat(core): add API keys to DynamicConfig.auth and extend IdentityProvider token resolution

crates/alknet-core/src/config/mod.rs

@@ -5,7 +5,8 @@ pub mod static_config;
 
 pub use config_service::ConfigServiceImpl;
 pub use dynamic_config::{
-    new_dynamic_config, AuthPolicy, ConfigReloadHandle, DynamicConfig, RateLimitConfig,
+    new_dynamic_config, ApiKeyEntry, AuthPolicy, ConfigReloadHandle, DynamicConfig,
+    RateLimitConfig, API_KEY_PREFIX,
 };
 pub use forwarding::{ForwardingAction, ForwardingPolicy, ForwardingRule, TargetPattern};
 pub use static_config::StaticConfig;