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

This reverts commit c92f4a5edd.

frontend/node_modules/@fullcalendar/timegrid/index.d.ts

@@ -0,0 +1,18 @@
+import { PluginDef } from '@fullcalendar/core';
+import '@fullcalendar/daygrid';
+
+declare const OPTION_REFINERS: {
+    allDaySlot: BooleanConstructor;
+};
+
+type ExtraOptionRefiners = typeof OPTION_REFINERS;
+declare module '@fullcalendar/core/internal' {
+    interface BaseOptionRefiners extends ExtraOptionRefiners {
+    }
+}
+//# sourceMappingURL=ambient.d.ts.map
+
+declare const _default: PluginDef;
+//# sourceMappingURL=index.d.ts.map
+
+export { _default as default };