Add a `DynamoSyncInputExecuteTime` counter #6709

Job	Run time
Build XLA / build	55m 50s
Build & publish docs	0s
GPU tests / test (benchmark_tests)	12m 5s
CPU tests / test (benchmark_tests)	9m 14s
GPU tests / test (cpp_tests1)	16m 32s
CPU tests / test (cpp_tests1)	13m 48s
GPU tests / test (cpp_tests2)	25m 1s
CPU tests / test (cpp_tests2)	16m 10s
GPU tests / test (python_tests, xla_op1)	37m 0s
CPU tests / test (python_tests, xla_op1)	18m 16s
GPU tests / test (python_tests, xla_op2)	12m 45s
CPU tests / test (python_tests, xla_op2)	8m 42s
GPU tests / test (python_tests, xla_op3)	53m 43s
CPU tests / test (python_tests, xla_op3)	11m 15s
GPU tests / test (python_tests, torch_mp_op)	1h 25m 0s
CPU tests / test (python_tests, torch_mp_op)	24m 28s
	6h 39m 49s

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