Revert "Add yet-another-react-lightbox package and update .gitignore to exclude node_modules"

This reverts commit c92f4a5edd.

frontend/node_modules/fastq/example.mjs

@@ -0,0 +1,11 @@
+import { promise as queueAsPromised } from './queue.js'
+
+/* eslint-disable */
+
+const queue = queueAsPromised(worker, 1)
+
+console.log('the result is', await queue.push(42))
+
+async function worker (arg) {
+  return 42 * 2
+}