Function paginate

paginate(arr, size): any[][]
Returns a paginated array.
Parameters
- arr: any[]
  The array to paginate.
- size: number
  The size of each page.
Returns any[][]
The paginated array.
Example
```
// [[1, 2], [3, 4], [5]]
paginate([1, 2, 3, 4, 5], 2)
```
- Defined in util.ts:244