## Pick Omit

### Instructions

Create a `pick` function that takes an object and a string or array of strings.
This function returns a new object that contains only the key/value pairs, whose key matches with the string or a string in the array, from the object passed as an argument.

Create a `omit` function that takes an object and a a string or array of strings.
This function returns a new object that contains only the key/value pairs, whose key doesn't match with the string or a single string in the array, from the object passed as an argument.

> Those functions are pure and must not modify the given object

### Notions

- [devdocs.io/javascript/global_objects/object](https://devdocs.io/javascript/global_objects/object)