Function unwrap

'Unwraps' a string, removing one or more 'wrapper' strings that it starts and ends with. Only removes when a matching end is found.

unwrap("'hello'", "'");        // hello
// No mataching end 'a', so nothing happens
unwrap("apple", "a");          // apple
unwrap("wow", "w");            // o
unwrap(`"'blah'"`, '"', "'");  // blah

unwrap(source, ...wrappers): string
Parameters
- source: string
- Rest...wrappers: readonly string[]
Returns string