Refactor config types into a separate crate (#16962)

Move config types into a separate crate because their macros expand into
a lot of new code.

codex-rs/login/tests/suite/auth_refresh.rs

@@ -4,7 +4,7 @@ use base64::Engine;
 use chrono::Duration;
 use chrono::Utc;
 use codex_app_server_protocol::AuthMode;
-use codex_login::AuthCredentialsStoreMode;
+use codex_config::types::AuthCredentialsStoreMode;
 use codex_login::AuthDotJson;
 use codex_login::AuthManager;
 use codex_login::REFRESH_TOKEN_URL_OVERRIDE_ENV_VAR;

codex-rs/login/tests/suite/device_code_login.rs

@@ -3,8 +3,8 @@
 use anyhow::Context;
 use base64::Engine;
 use base64::engine::general_purpose::URL_SAFE_NO_PAD;
+use codex_config::types::AuthCredentialsStoreMode;
 use codex_login::ServerOptions;
-use codex_login::auth::AuthCredentialsStoreMode;
 use codex_login::auth::load_auth_dot_json;
 use codex_login::run_device_code_login;
 use serde_json::json;

codex-rs/login/tests/suite/login_server_e2e.rs

@@ -7,8 +7,8 @@ use std::time::Duration;
 
 use anyhow::Result;
 use base64::Engine;
+use codex_config::types::AuthCredentialsStoreMode;
 use codex_login::ServerOptions;
-use codex_login::auth::AuthCredentialsStoreMode;
 use codex_login::run_login_server;
 use core_test_support::skip_if_no_network;
 use tempfile::tempdir;