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

frontend/node_modules/has-flag/index.d.ts

@@ -1,39 +0,0 @@
-/**
-Check if [`argv`](https://nodejs.org/docs/latest/api/process.html#process_process_argv) has a specific flag.
-
-@param flag - CLI flag to look for. The `--` prefix is optional.
-@param argv - CLI arguments. Default: `process.argv`.
-@returns Whether the flag exists.
-
-@example
-```
-// $ ts-node foo.ts -f --unicorn --foo=bar -- --rainbow
-
-// foo.ts
-import hasFlag = require('has-flag');
-
-hasFlag('unicorn');
-//=> true
-
-hasFlag('--unicorn');
-//=> true
-
-hasFlag('f');
-//=> true
-
-hasFlag('-f');
-//=> true
-
-hasFlag('foo=bar');
-//=> true
-
-hasFlag('foo');
-//=> false
-
-hasFlag('rainbow');
-//=> false
-```
-*/
-declare function hasFlag(flag: string, argv?: string[]): boolean;
-
-export = hasFlag;