Implement Standalone Nexus Operations #4983

Job	Run time
check-protos	8m 1s
cloud-test	2m 2s
test-latest-deps	9m 20s
features-tests / test	7m 53s
build-lint-test (3.14, ubuntu-arm)	10m 5s
build-lint-test (3.10, ubuntu-latest)	9m 51s
build-lint-test (3.10, macos-arm)	7m 43s
build-lint-test (3.10, ubuntu-arm)	10m 54s
build-lint-test (3.10, macos-intel)	17m 32s
build-lint-test (3.14, ubuntu-latest)	11m 31s
build-lint-test (3.10, windows-latest)	13m 41s
build-lint-test (3.14, windows-latest)	12m 36s
build-lint-test (3.14, macos-arm)	10m 0s
build-lint-test (3.14, macos-intel)	14m 58s
	2h 26m 7s

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