Apply clang-format to ATen headers (#78406)
Add `aten/src/ATen/*.h` to .lintrunner.toml and run `lintrunner -a`
Only non-formatting change to the code: add `#include <c10/util/ArrayRef.h>` to `IListRef.h`
Pull Request resolved: https://github.com/pytorch/pytorch/pull/78406
Approved by: https://github.com/suo, https://github.com/atalman
