feat(admin-web): add folder and project creation functionality in FolderNode and FolderTree components

hub/admin-web/src/lib/components/FolderTree.svelte

@@ -9,6 +9,8 @@
 		projects,
 		parentId,
 		slug,
+		onCreateFolder,
+		onCreateProject,
 	}: {
 		folders: ExplorerFolder[];
 		projects: {
@@ -20,6 +22,8 @@
 		}[];
 		parentId: string | null;
 		slug: string;
+		onCreateFolder?: (parentId: string) => void;
+		onCreateProject?: (folderId: string) => void;
 	} = $props();
 
 	let childFolders = $derived(folders.filter((f) => f.parentId === parentId));
@@ -44,6 +48,6 @@
 	{/each}
 
 	{#each childFolders as f (f.id)}
-		<FolderNode folder={f} {folders} {projects} {slug} />
+		<FolderNode folder={f} {folders} {projects} {slug} {onCreateFolder} {onCreateProject} />
 	{/each}
 </div>