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

frontend/node_modules/eslint/messages/plugin-missing.js

@@ -1,19 +0,0 @@
-"use strict";
-
-module.exports = function(it) {
-    const { pluginName, resolvePluginsRelativeTo, importerName } = it;
-
-    return `
-ESLint couldn't find the plugin "${pluginName}".
-
-(The package "${pluginName}" was not found when loaded as a Node module from the directory "${resolvePluginsRelativeTo}".)
-
-It's likely that the plugin isn't installed correctly. Try reinstalling by running the following:
-
-    npm install ${pluginName}@latest --save-dev
-
-The plugin "${pluginName}" was referenced from the config file in "${importerName}".
-
-If you still can't figure out the problem, please see https://eslint.org/docs/latest/use/troubleshooting.
-`.trimStart();
-};