Formats the given string in snake case fashion
snake('hello world') -> 'hello_world' snake('va va-VOOM') -> 'va_va_voom' snake('helloWord') -> 'hello_world'
Optional
Formats the given string in snake case fashion
snake('hello world') -> 'hello_world' snake('va va-VOOM') -> 'va_va_voom' snake('helloWord') -> 'hello_world'