Primitive interface updates for SamplerV2

[kt474]

Part of #1131

Support SamplerV2 input/output:

• RFC
• Input/output would also be PUB based
• Output is per shot measurement, with convenience functions to returns counts/probabilities

Based on the following Qiskit PRs Qiskit/qiskit#11566 (replaced Qiskit/qiskit#11264)

• SamplerV2 Container Add primitives.containers.BitArray container class qiskit#11542
• BaseSamplerV2 Add BaseSamplerV2 qiskit#11529

Work should be done off the experimental branch where some of the work is already done (#1224)

[kt474]

cc: @gadial

[drew-distefano]

@t-imamichi I noticed that Qiskit/qiskit#11566 is in review. Do you have an estimate for when you expect it to close? Once it's complete @gadial will be unblocked on this work.

[ihincks]

The BaseSamplerV2 has been closed, and the BaseEstimatorV2 is in the merge queue. My guess is that the runtime repo should not be blocked two state vector implementations (Qiskit/qiskit#11566 and Qiskit/qiskit#11227) but only on BaseEstimatorV2.

That being said, the two state vector implementations will hopefully be merged tomorrow.

[kt474]

Completed in 0.21.0 release