feat(external-registry): Enhance authentication handling and update UI for external registries

ts_interfaces/data/externalregistry.ts

@@ -19,14 +19,14 @@ export interface IExternalRegistry {
     url: string;
     
     /**
-     * Username for authentication
+     * Username for authentication (optional for token-based or public registries)
      */
-    username: string;
+    username?: string;
     
     /**
-     * Password or access token for authentication
+     * Password, access token, or API key for authentication (optional for public registries)
      */
-    password: string;
+    password?: string;
     
     /**
      * Optional description
@@ -41,7 +41,7 @@ export interface IExternalRegistry {
     /**
      * Authentication type
      */
-    authType?: 'basic' | 'token' | 'oauth2';
+    authType?: 'none' | 'basic' | 'token' | 'oauth2';
     
     /**
      * Allow insecure registry connections (HTTP or self-signed certs)