Function isValidDrivingLicense

isValidDrivingLicense(license: unknown): boolean
Validates whether the input is a valid Sri Lankan Driving License number.
Parameters
- license: unknown
  Driving licence number to check.
Returns boolean
true for a legacy, smart-card, or NIC-based licence number.
Example
```
isValidDrivingLicense('B1234567'); // true
isValidDrivingLicense('ABC'); // false
```
- Defined in license/validator.ts:19