feat(openapi): Add OpenAPI module: decorators, spec generator, runtime validation and Swagger UI

ts/decorators/index.ts

@@ -5,6 +5,14 @@ export type {
   IRouteCompressionOptions,
   IRegisteredController,
   ICompiledRoute,
+  // OpenAPI types
+  TJsonSchema,
+  IOpenApiOperationMeta,
+  IOpenApiParamMeta,
+  IOpenApiRequestBodyMeta,
+  IOpenApiResponseBodyMeta,
+  IOpenApiRouteMeta,
+  IOpenApiControllerMeta,
 } from './decorators.types.js';
 
 // Route decorator
@@ -49,3 +57,15 @@ export {
   normalizePath,
   combinePaths,
 } from './decorators.metadata.js';
+
+// OpenAPI decorators
+export {
+  ApiOperation,
+  ApiParam,
+  ApiQuery,
+  ApiHeader,
+  ApiRequestBody,
+  ApiResponseBody,
+  ApiSecurity,
+  ApiTag,
+} from '../openapi/openapi.decorators.js';