Add a `DynamoSyncInputExecuteTime` counter #6572

Job	Run time
Build XLA / build	57m 58s
Build & publish docs	0s
GPU tests / test (benchmark_tests)	12m 30s
CPU tests / test (benchmark_tests)	10m 8s
GPU tests / test (cpp_tests1)	17m 9s
CPU tests / test (cpp_tests1)	14m 36s
GPU tests / test (cpp_tests2)	25m 50s
CPU tests / test (cpp_tests2)	16m 39s
GPU tests / test (python_tests, xla_op1)	36m 39s
CPU tests / test (python_tests, xla_op1)	19m 30s
GPU tests / test (python_tests, xla_op2)	48m 27s
CPU tests / test (python_tests, xla_op2)	10m 1s
GPU tests / test (python_tests, xla_op3)	52m 4s
CPU tests / test (python_tests, xla_op3)	12m 21s
GPU tests / test (python_tests, torch_mp_op)	2h 1m 4s
CPU tests / test (python_tests, torch_mp_op)	25m 54s
	8h 0m 50s

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