TFLite/LiteRT backend update

[freedomtan]

Recently, the LiteRT was updated to support Qualcomm QNN accelerator [1] and MediaTek NeuroPilot accelerator [2]. Pixel EdgeTPU support is currently under “experimental access” [3]. Let’s explore the capabilities of these new features.

[1] https://developers.googleblog.com/unlocking-peak-performance-on-qualcomm-npu-with-litert/
[2] https://developers.googleblog.com/mediatek-npu-and-litert-powering-the-next-generation-of-on-device-ai/
[3] https://ai.google.dev/edge/litert/next/tensor_ml_sdk

[freedomtan]

@anhappdev to investigate what we should do and to see if we can get the "experimental access" to Google's Tensor ML SDK.