support POW operator tflm
I have implemented POW operator locally. It would be great if we could integrate it into the main repo @vigi04,
Could you please refer to the guide on how to port TFLite ops to TFLM is located here:
https://github.com/tensorflow/tflite-micro/blob/main/tensorflow/lite/micro/docs/porting_reference_ops.md

Thank you!

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POW operator support on tflm