Move tree implementation out of collections store (#4763)

* refactor: attaching emoji in tree node is unnecessary

* refactor: pass depth and hasChildren as separate props

* refactor: move tree impl into a separate hook

* refactor: separate out as DocumentExplorer for reuse

* fix: separate search and node

* fix: review comments

* fix: tsc

shared/types.ts

@@ -117,3 +117,20 @@ export enum TeamPreference {
 }
 
 export type TeamPreferences = { [key in TeamPreference]?: boolean };
+
+export enum NavigationNodeType {
+  Collection = "collection",
+  Document = "document",
+}
+
+export type NavigationNode = {
+  id: string;
+  title: string;
+  url: string;
+  children: NavigationNode[];
+  isDraft?: boolean;
+  collectionId?: string;
+  type?: NavigationNodeType;
+  parent?: NavigationNode | null;
+  depth?: number;
+};