[et][dim order] aot support for dim order variant empty op

Pull Request resolved: https://github.com/pytorch/executorch/pull/7168

This diff added aot support for dim order variant empty op, including operator impl and registration, memory_format_pass update, and end2end tests on both aten and lean mode.
ghstack-source-id: 256440140

Differential Revision: [D66738618](https://our.internmc.facebook.com/intern/diff/D66738618/)

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Co-authored-by: gasoonjia <gasoonjia@icloud.com>