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

frontend/node_modules/escape-string-regexp/index.d.ts

@@ -1,18 +0,0 @@
-/**
-Escape RegExp special characters.
-
-You can also use this to escape a string that is inserted into the middle of a regex, for example, into a character class.
-
-@example
-```
-import escapeStringRegexp = require('escape-string-regexp');
-
-const escapedString = escapeStringRegexp('How much $ for a 🦄?');
-//=> 'How much \\$ for a 🦄\\?'
-
-new RegExp(escapedString);
-```
-*/
-declare const escapeStringRegexp: (string: string) => string;
-
-export = escapeStringRegexp;