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

frontend/node_modules/@fullcalendar/timegrid/index.cjs

@@ -1,38 +0,0 @@
-'use strict';
-
-Object.defineProperty(exports, '__esModule', { value: true });
-
-var index_cjs = require('@fullcalendar/core/index.cjs');
-var internalCommon = require('./internal.cjs');
-require('@fullcalendar/core/internal.cjs');
-require('@fullcalendar/core/preact.cjs');
-require('@fullcalendar/daygrid/internal.cjs');
-
-const OPTION_REFINERS = {
-    allDaySlot: Boolean,
-};
-
-var index = index_cjs.createPlugin({
-    name: '@fullcalendar/timegrid',
-    initialView: 'timeGridWeek',
-    optionRefiners: OPTION_REFINERS,
-    views: {
-        timeGrid: {
-            component: internalCommon.DayTimeColsView,
-            usesMinMaxTime: true,
-            allDaySlot: true,
-            slotDuration: '00:30:00',
-            slotEventOverlap: true, // a bad name. confused with overlap/constraint system
-        },
-        timeGridDay: {
-            type: 'timeGrid',
-            duration: { days: 1 },
-        },
-        timeGridWeek: {
-            type: 'timeGrid',
-            duration: { weeks: 1 },
-        },
-    },
-});
-
-exports["default"] = index;