feat: added feed generation

src/main/engine/index.ts

@@ -85,4 +85,11 @@ export {
   type GitStatusFile,
   type GitStatusCounts,
   type GitInitResult,
-} from './GitEngine';
+} from './GitEngine';
+export {
+  BlogGenerationEngine,
+  getBlogGenerationEngine,
+  resolvePublicBaseUrl,
+  type BlogGenerationOptions,
+  type BlogGenerationResult,
+} from './BlogGenerationEngine';