Add `SamplerV2` support

[coruscating]

Now that SamplerV2 has been released and supports single-shot counts data, we can theoretically run all our count-based experiments using the sampler primitive. The work can be broken into these PRs:

• [ ] Refactor circuits() in older experiments to use parameterized_circuits() following @nkanazawa1989's work in Stark experiments
• [ ] Save parameters and circuit metadata in experiment metadata
• [ ] Support SamplerV2 backends in experiment.run()
• [ ] Refactor curve analysis to parse the new format using metadata