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

This reverts commit c92f4a5edd.

frontend/node_modules/eslint/lib/rules/no-async-promise-executor.js

@@ -0,0 +1,39 @@
+/**
+ * @fileoverview disallow using an async function as a Promise executor
+ * @author Teddy Katz
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "problem",
+
+        docs: {
+            description: "Disallow using an async function as a Promise executor",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/no-async-promise-executor"
+        },
+
+        fixable: null,
+        schema: [],
+        messages: {
+            async: "Promise executor functions should not be async."
+        }
+    },
+
+    create(context) {
+        return {
+            "NewExpression[callee.name='Promise'][arguments.0.async=true]"(node) {
+                context.report({
+                    node: context.sourceCode.getFirstToken(node.arguments[0], token => token.value === "async"),
+                    messageId: "async"
+                });
+            }
+        };
+    }
+};