## flags

### Instruction

Create a function called `flags` that receives an object and outputs
the specific aliases and descriptions from the properties of that object.

The `help` flag:
  - Should be present in the output by default.
  - When not present in the input, it should output the description of all flags.
    But when present it can specify the flags that you want to see
    the description of. (ex: `help: ['divide']`)

#### Example:

```js
{
  multiply: 'multiply the values',
  divide: 'divides the values',
  help: ['divide']
}
```
and outputs :

```js
{
  alias: { h: 'help', m: 'multiply', d: 'divide'}
  description: '-d, --divide: divides the values',
}
```