import { getSiblings } from "https://deno.land/x/html_parser@v0.1.3/src/utils/mod.ts";
Gets an elements siblings, including the element itself.
Attempts to get the children through the element's parent first.
If we don't have a parent (the element is a root node),
we walk the element's prev & next to get all remaining nodes.
Parameters
elem: Node
Element to get the siblings of.