The application was originally licensed under CC-NC-SA, which is not compatible with the GPLv2 license of WireGuard,
a core component of this project.
The GPLv2 requires that any derivative work, which includes any software that incorporates GPLv2-licensed code,
must also be licensed under GPLv2.
This ensures the same freedoms to use, modify, and distribute the software are preserved.
This commit updates the license of the application to GPLv2 to comply with WireGuard's licensing requirements and to maintain legal conformity.