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

This reverts commit c92f4a5edd.

frontend/node_modules/yaml/browser/dist/nodes/Scalar.js

@@ -0,0 +1,24 @@
+import { SCALAR } from './identity.js';
+import { NodeBase } from './Node.js';
+import { toJS } from './toJS.js';
+
+const isScalarValue = (value) => !value || (typeof value !== 'function' && typeof value !== 'object');
+class Scalar extends NodeBase {
+    constructor(value) {
+        super(SCALAR);
+        this.value = value;
+    }
+    toJSON(arg, ctx) {
+        return ctx?.keep ? this.value : toJS(this.value, arg, ctx);
+    }
+    toString() {
+        return String(this.value);
+    }
+}
+Scalar.BLOCK_FOLDED = 'BLOCK_FOLDED';
+Scalar.BLOCK_LITERAL = 'BLOCK_LITERAL';
+Scalar.PLAIN = 'PLAIN';
+Scalar.QUOTE_DOUBLE = 'QUOTE_DOUBLE';
+Scalar.QUOTE_SINGLE = 'QUOTE_SINGLE';
+
+export { Scalar, isScalarValue };