Migrate to Qiskit v2.
Support Qiskit version 2.
Hi @c.gonzalez.calaza and @a.huanay.de.dios ! This MR supports qiskit version 2. I have already added a tag 2.0.0 and updated the setup. Tested with Qiskit version 2.2.1, in case you need even newer version, please let me know. Thanks!