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

frontend/node_modules/@fullcalendar/daygrid/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');
-
-var index = index_cjs.createPlugin({
-    name: '@fullcalendar/daygrid',
-    initialView: 'dayGridMonth',
-    views: {
-        dayGrid: {
-            component: internalCommon.DayGridView,
-            dateProfileGeneratorClass: internalCommon.TableDateProfileGenerator,
-        },
-        dayGridDay: {
-            type: 'dayGrid',
-            duration: { days: 1 },
-        },
-        dayGridWeek: {
-            type: 'dayGrid',
-            duration: { weeks: 1 },
-        },
-        dayGridMonth: {
-            type: 'dayGrid',
-            duration: { months: 1 },
-            fixedWeekCount: true,
-        },
-        dayGridYear: {
-            type: 'dayGrid',
-            duration: { years: 1 },
-        },
-    },
-});
-
-exports["default"] = index;