Update README.md to provide a comprehensive overview of The Order monorepo, including repository structure, quickstart guide, development workflow, and contribution guidelines.

packages/auth/README.md

@@ -0,0 +1,20 @@
+# @the-order/auth
+
+Authentication and authorization helpers for The Order.
+
+## Features
+
+- OIDC/OAuth2 support
+- DID (Decentralized Identifier) support
+- eIDAS integration
+
+## Usage
+
+```typescript
+import { OIDCProvider, DIDResolver, EIDASProvider } from '@the-order/auth';
+
+const oidc = new OIDCProvider(config);
+const didResolver = new DIDResolver();
+const eidas = new EIDASProvider(config);
+```
+