Add Temporal Operation Handler #5365

Job	Run time
check-protos	8m 24s
cloud-test	1m 53s
build-lint-test (3.10, ubuntu-arm)	10m 43s
build-lint-test (3.14, ubuntu-latest)	16m 59s
build-lint-test (3.10, macos-arm)	9m 58s
test-latest-deps	10m 7s
build-lint-test (3.14, ubuntu-arm)	10m 39s
build-lint-test (3.10, windows-latest)	14m 59s
build-lint-test (3.14, macos-arm)	10m 55s
features-tests / test	8m 15s
build-lint-test (3.14, windows-latest)	17m 25s
build-lint-test (3.10, ubuntu-latest)	13m 59s
	2h 14m 16s

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