[ET-VK][14/n] aten.t, aten._to_copy, aten.contiguous

[yipjustin]

Stack from ghstack (oldest at bottom):

• -> #3390
• #3389
• #3388
• #3351

3 more trivial operators.

For _to_copy and contiguous, since the vulkan memory layout is different from that of CPU, we ignore these arguments.

There is one exception of changing dtype, we will add this feature when needed.

Differential Revision: D56666219

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As of commit 64ff6d2f751263ef4c45db4979cc4def55f018ee with merge base e5471a5a7ade0f09b383e9ef1403cff73a0ccd1f (): :green_heart: Looks good so far! There are no failures yet. :green_heart:

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This pull request was exported from Phabricator. Differential Revision: D56666219