ENYO-557: Handle formatting of minutes when ilib is not loaded.

### Issue
When `ilib` is not loaded we are attempting to format the minute with a non-existent method, causing an error.

### Fix
We implement the `formatMinute` method in `moon.TimePicker`.

Enyo-DCO-1.1-Signed-off-by: Aaron Tam <aaron.tam@lge.com>