Feature: `withPad / pad / lrpad`

Pads the input text to a new length.

```javascript
  pad(); // => ''
  pad('Hello', 1); // => 'Hello'
  pad('Hello', 7); // => '  Hello  '
  pad('Hello', 7, '*'); // => '*Hello*'
  pad('Hello', 10, '*'); // => '**Hello***'
  pad('Hello', 10, '123'); // => '123Hello12'
```

**Aliases**

```javascript
import pad from '@plexis/pad';
import {pad, lrpad} from 'plexis';
```