feat(create-gen-app): register licenses resolver for optionsFrom support

Registers a 'licenses' resolver that returns the list of supported
licenses from listSupportedLicenses(). This allows boilerplate templates
to use 'optionsFrom: licenses' to dynamically populate license options.

Also updates the test mock to include registerDefaultResolver.

Co-Authored-By: Dan Lynch <pyramation@gmail.com>

Author: devin-ai-integration[bot]

packages/create-gen-app/__tests__/create-gen.test.ts

@@ -18,6 +18,7 @@ jest.mock('inquirerer', () => {
         prompt: jest.fn().mockResolvedValue({}),
       };
     }),
+    registerDefaultResolver: jest.fn(),
   };
 });
 

packages/create-gen-app/src/index.ts

@@ -1,11 +1,18 @@
 import * as fs from 'fs';
 import * as path from 'path';
 
+import { registerDefaultResolver } from 'inquirerer';
+
 import { extractVariables } from './template/extract';
 import { promptUser } from './template/prompt';
 import { replaceVariables } from './template/replace';
+import { listSupportedLicenses } from './licenses';
 import { CreateGenOptions } from './types';
 
+// Register the 'licenses' resolver for optionsFrom support
+// This allows boilerplate templates to use: "optionsFrom": "licenses"
+registerDefaultResolver('licenses', () => listSupportedLicenses());
+
 // Export new modular classes
 export * from './cache/cache-manager';
 export * from './cache/types';