[QNN] Convert fake quantized take to quantized op

[shinh]

Just using the vanila take op should be fine. I referred to how pad op is handled.

Note this implementation works only for constant indices. To handle non constant indices, I'm guessing we should modify src/relay/transforms/fake_quantization_to_integer.cc so that it allows integer inputs without dequantize. Specifically, I think it should capture the following pattern:

x  i
|  |
dq |
|  |
\  /
take
 |
 q

but I'm not 100% sure.

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