Expose default options for createRenderer from @vue/runtime-dom

[yanni4night]

I want to create a custom renderer, but with only few options override default.

import { createRenderer } from '@vue/runtime-core';
import { nodeOpts } from '@vue/runtime-dom'; // 😀 expected

createRenderer({
   ...nodeOpts,
   createElement(tag) {
   // ...
   },
});

My current solution is copying source code, but it's unreliable apparently, as the default insertStaticContent and patchProp are complicated.

So, I think it'll be good if @vue/runtime-dom exposes the default options.