Function isBool

isBool(value: unknown): value is boolean
Checks whether the given value is a boolean value (true or false).
Parameters
- value: unknown
  The value to be checked.
Returns value is boolean
True if the value is a boolean (true or false), otherwise false.
Example
```
isBool(true); // Returns true
isBool(false); // Returns true
isBool(0); // Returns false
isBool('true'); // Returns false
isBool(null); // Returns false
isBool(undefined); // Returns false
```