change: Add PRx gate #221

Job	Run time
os-test (Braket-unit, windows-latest, x64)	10m 16s
version-test (Braket-unit, 1.6, x64)	8m 26s
os-test (Braket-unit, macOS-latest, x64)	9m 46s
version-test (Braket-unit, 1.7, x64)	8m 21s
os-test (PyBraket-unit, windows-latest, x64)	7m 29s
version-test (Braket-unit, 1.8, x64)	7m 33s
os-test (PyBraket-unit, macOS-latest, x64)	6m 42s
version-test (Braket-unit, 1.9, x64)	9m 4s
version-test (Braket-unit, 1.10, x64)	9m 17s
version-test (Braket-unit, nightly, x64)	14m 34s
version-test (PyBraket-unit, 1.6, x64)	4m 29s
version-test (PyBraket-unit, 1.7, x64)	4m 21s
version-test (PyBraket-unit, 1.8, x64)	4m 17s
version-test (PyBraket-unit, 1.9, x64)	3m 48s
version-test (PyBraket-unit, 1.10, x64)	3m 48s
version-test (PyBraket-unit, nightly, x64)	5m 16s
Example notebooks (Examples-unit, 1.9, x64)	1m 53s
Documentation	1m 44s
	2h 1m 4s

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