Just executor

[beckykd]

Pulled a bunch of changes from #4640

closes #4665

Files with totally new content:

• https://qiskit.github.io/documentation/pr-5028/docs/guides/executor-broadcasting
• https://qiskit.github.io/documentation/pr-5028/docs/guides/executor-examples
• https://qiskit.github.io/documentation/pr-5028/docs/guides/executor-input-output
• https://qiskit.github.io/documentation/pr-5028/docs/guides/executor-options
• https://qiskit.github.io/documentation/pr-5028/docs/guides/get-started-with-executor
• https://qiskit.github.io/documentation/pr-5028/docs/guides/get-started-with-backend-primitives
• https://qiskit.github.io/documentation/pr-5028/docs/guides/estimator-noise-management
• https://qiskit.github.io/documentation/pr-5028/docs/guides/sampler-noise-management-

Files with some new content (executor-related):

• https://qiskit.github.io/documentation/pr-5028/docs/guides/directed-execution-model
• https://qiskit.github.io/documentation/pr-5028/docs/guides/qiskit-runtime-primitives
• https://qiskit.github.io/documentation/pr-5028/docs/guides/run-jobs-batch
• https://qiskit.github.io/documentation/pr-5028/docs/guides/run-jobs-session

[jyu00]

Some minor comments but we are ready to go! 🚀

[abbycross]

🥳

[abbycross]

APPROVE