docs: add description about 'exports' and 'exportedBindings'

docs/05-plugin-development.md

@@ -784,6 +784,8 @@ type ModuleInfo = {
   importedIds: string[]; // the module ids statically imported by this module
   importedIdResolutions: ResolvedId[]; // how statically imported ids were resolved, for use with this.load
   importers: string[]; // the ids of all modules that statically import this module
+  exportedBindings: Record<string, string[]> | null; // contain exported variables with original `from` path
+  exports: string[] | null; // all exported variables
   dynamicallyImportedIds: string[]; // the module ids imported by this module via dynamic import()
   dynamicallyImportedIdResolutions: ResolvedId[]; // how ids imported via dynamic import() were resolved
   dynamicImporters: string[]; // the ids of all modules that import this module via dynamic import()