Support for the Cirq library

[kenya-sk]

Task Overview

QXMT aims to support various quantum libraries through a unified interface in the future, simplifying experiment management. In this issue, I would like to request the implementation of support for the Cirq library in QXMT, which currently only supports Pennylane.

The library-dependent code is primarily implemented in the following locations.

• qxmt/devices
• qxmt/kernels
• qxmt/feature_maps

Please implement the code that utilizes the Cirq simulator with a similar interface in these folders. Ultimately, I want it to be executable via the config, just as it currently is. It is perfectly fine to tackle these changes across multiple issues.

Feel free to reach out on this thread if you have any questions.
Thank you !