Function isBoolean

isBoolean(value: unknown): value is boolean
Checks if a value is a boolean.
Parameters
- value: unknown
  The value to check.
Returns value is boolean
True if the value is a boolean.
Example
```
isBoolean(true);     // true
isBoolean(false);    // true
isBoolean("true");   // false
```
- Defined in src/safety/utils.ts:183