feat(MoveShelfModal): Add new shelf

middleware/queries/index.ts

@@ -6,3 +6,4 @@ export { findBook } from "./findBook";
 export { createBook } from "./createBook";
 export { deleteBook } from "./deleteBook";
 export { editBook } from "./editBook";
+export { listShelves } from "./listShelves";

middleware/queries/listShelves.ts

@@ -0,0 +1 @@
+export const listShelves = `SELECT DISTINCT shelf FROM bookData;`;