Adding backend related methods to QiskitRuntimeLocalService

[SamFerracin]

Summary

Add the following methods to QiskitRuntimeLocalService

backends
backend
least_busy

Details and comments

Fixes #1606

[coveralls]

Pull Request Test Coverage Report for Build 9604957174

Details

• 31 of 31 (100.0%) changed or added relevant lines in 2 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.08%) to 82.083%

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Totals
Change from base Build 9601825612:	0.08%
Covered Lines:	6107
Relevant Lines:	7440

---

💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 9616260611

Details

• 31 of 31 (100.0%) changed or added relevant lines in 2 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.08%) to 82.083%

---

Totals
Change from base Build 9605113454:	0.08%
Covered Lines:	6107
Relevant Lines:	7440

---

💛 - Coveralls

[kt474]

Can you also add a release note - instructions are here https://github.com/Qiskit/qiskit-ibm-runtime/blob/main/CONTRIBUTING.md#release-notes

You can see examples here, these later get rendered in the qiskit docs here

[coveralls]

Pull Request Test Coverage Report for Build 9617626346

Details

• 31 of 31 (100.0%) changed or added relevant lines in 2 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.08%) to 82.083%

---

Totals
Change from base Build 9605113454:	0.08%
Covered Lines:	6107
Relevant Lines:	7440

---

💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 9663264202

Details

• 31 of 31 (100.0%) changed or added relevant lines in 2 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.08%) to 82.083%

---

Totals
Change from base Build 9605113454:	0.08%
Covered Lines:	6107
Relevant Lines:	7440

---

💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 9685279836

Details

• 30 of 30 (100.0%) changed or added relevant lines in 2 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.08%) to 82.081%

---

Totals
Change from base Build 9605113454:	0.08%
Covered Lines:	6106
Relevant Lines:	7439

---

💛 - Coveralls

[jyu00]

It's too late now since this was already released, but just for future reference, QiskitRuntimeLocalService is actually a undocumented class (i.e. it doesn't show up in API reference). It's hidden because it was not meant to be instantiated directly. So one wouldn't know about its existence and thus its new backend methods unless they look at the code, at least until #1608 is released.