Recover backend properties and noise model

[yao-cqc]

Description

• Serialised BackendProperties is now saved in the misc field of a BackendInfo.
• Method for constructing a BackendProperties from a BackendInfo via the serialised BackendProperties.
• Method for constructing a BackendProperties from a legacy BackendInfo.
• Method for constructing NoiseModel from a BackendProperties

Example

from pytket.extensions.qiskit import IBMQBackend
from pytket.extensions.qiskit.qiskit_convert import (
    backend_properties_from_backendinfo, 
    backend_properties_from_legacy_backendinfo, 
    noise_model_from_backend_properties,
)

b = IBMQBackend("ibm_brisbane")
bp1 = backend_properties_from_legacy_backendinfo(b.backend_info)
bp2 = backend_properties_from_backendinfo(b.backend_info)
noise_model1 = noise_model_from_backend_properties(bp1)
noise_model2 = noise_model_from_backend_properties(bp2)

Related issues

Implements #370

Checklist

• [x] I have performed a self-review of my code.
• [x] I have commented hard-to-understand parts of my code.
• [ ] I have made corresponding changes to the public API documentation.
• [ ] I have added tests that prove my fix is effective or that my feature works.
• [ ] I have updated the changelog with any user-facing changes.