Function format

format(formatString: string, ...formatArgs: unknown[]): string
The main formatting function.
```
format("{}, {}!", "Hello", "world"); // Returns "Hello, world!"
```
Parameters
- formatString: string
  Format String, e.g. "{}, {}!".
- ...formatArgs: unknown[]
  Format arguments, e.g. "Hello" and "world".
Returns string
- Formatted string, e.g. "Hello, world!".