Support for Nvidia AGX Thor

* In the standard cloud confidential computing setup, an Intel CPU supporting TDX is used in concert with an Nvidia GPU, such as the H100/H200.

* The new Nvidia AGX Thor does not have an Intel CPU, but a custom ARM CPU - the 14-core ​​Arm® Neoverse®-V3AE 64-bit CPU​​.

* That uses the 'Arm Confidential Computing Architecture' and the 'Armv9.2-A Realm Management Extension' (RME)

* Are there plans to add support for the Arm CC to Dstack? If so, do you need help with that?

該 issue 沒有列出任何檔案、測試或進入點。首先檢查 dstack 如何處理標準的 Intel TDX 和 Nvidia GPU Confidential Computing 設定，然後調查所述的 Arm Confidential Computing Architecture 和 RME 要求。要算完成，需要明確支援範圍以及 AGX Thor 的實作計畫。

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