JavaScript syntax implementation library

```rs likejs::var!(var strtext = "Hello, World!".tostring());

```

rs let f = likejs::arrow!(() => {"Hello, World!".to_string()}); rs let f = likejs::arrow!(() => "Hello, World!".to_string()); rs likejs::normal_function!(function add(a, b){ a+b }); let int = add(12,13);