feat: enhance GenericVerifiableCredential interface with explicit optional properties

- Add name, description, and agent as optional properties to GenericVerifiableCredential
- Improve type safety and IntelliSense for common claim properties
- Maintain backward compatibility with existing code
- Reduce need for type assertions when accessing claim properties

src/interfaces/index.ts

@@ -32,3 +32,5 @@ export type {
 export * from "./limits";
 export * from "./deepLinks";
 export * from "./common";
+export * from "./claims-result";
+export * from "./records";