tests seem to be missing

Hello,

Firstly, I'd like to express my appreciation for your work on uuidv7.

I've noticed that the current implementation of the library does not seem to include any tests. As a user, having tests would provide a level of assurance about the stability and reliability of the library. It would also make it easier for contributors to ensure that their changes do not introduce regressions.

Moreover, now that standardization according to RFC 9562 has been completed, it's likely that demand for this library will increase. As more developers start to use this library, the presence of tests will become even more critical to ensure its robustness and reliability.

Therefore, I kindly request that tests be added to the library. This would not only improve the quality of the library but also make it easier for the community to contribute and help in its development.

Best regards.

Start by inspecting the TypeScript library implementation and its UUIDv7 behavior against RFC 9562. Define tests covering the library's expected behavior and verify that the resulting suite provides regression protection; the issue does not name specific files or an existing test command.