Fix dragging selected notes to notebooks

src/lib/utils/note-drag.ts

@@ -0,0 +1,7 @@
+export function encodeNoteDragPaths(paths: Iterable<string>): string {
+  return [...paths].join("\n");
+}
+
+export function decodeNoteDragPaths(payload: string): string[] {
+  return payload.split(/\r?\n/).filter((path) => path.length > 0);
+}