chore(svelte/hooks): add docs

packages/svelte/src/lib/hooks/useNodesEdges.ts

@@ -1,10 +1,22 @@
 import { useStore } from '$lib/store';
 
+/**
+ * Hook for getting the current nodes from the store.
+ *
+ * @public
+ * @returns store with an array of nodes
+ */
 export function useNodes() {
   const { nodes } = useStore();
   return nodes;
 }
 
+/**
+ * Hook for getting the current edges from the store.
+ *
+ * @public
+ * @returns store with an array of edges
+ */
 export function useEdges() {
   const { edges } = useStore();
   return edges;