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

frontend/node_modules/yaml/browser/dist/schema/common/seq.js

@@ -1,17 +0,0 @@
-import { isSeq } from '../../nodes/identity.js';
-import { YAMLSeq } from '../../nodes/YAMLSeq.js';
-
-const seq = {
-    collection: 'seq',
-    default: true,
-    nodeClass: YAMLSeq,
-    tag: 'tag:yaml.org,2002:seq',
-    resolve(seq, onError) {
-        if (!isSeq(seq))
-            onError('Expected a sequence for this tag');
-        return seq;
-    },
-    createNode: (schema, obj, ctx) => YAMLSeq.from(schema, obj, ctx)
-};
-
-export { seq };