[orc-rt] Add bind_front, a pre-c++-20 std::bind_front substitute. #155557
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This can be used until the ORC runtime is able to move to c++-20. Also adds a CommonTestUtils header with a utility class, OpCounter, that counts the number of default constructions, copy constructions and assignments, move constructions and assignments, and destructions. This is used to test that orc_rt::bind_front doesn't introduce unnecessary copies / moves.
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This can be used until the ORC runtime is able to move to c++-20.
Also adds a CommonTestUtils header with a utility class, OpCounter, that counts the number of default constructions, copy constructions and assignments, move constructions and assignments, and destructions. This is used to test that orc_rt::bind_front doesn't introduce unnecessary copies / moves.