Function countable

countable(count: number, singular: string, plural?: string): string
Pluralize / count something in English.
Parameters
- count: number
  the number of items
- singular: string
  the singular form of the item
- plural: string = ...
  the plural form of the item (default: singular + "s")
Returns string
the string with the count and the singular or plural form
Example
```
import { countable } from "@trashpanda001/helpers/string"

countable(1, "cat")
// "1 cat"
countable(2, "cat")
// "2 cats"
countable(2, "cat", "felines")
```
- Defined in string.ts:78