support generators and Sequences.
*   `tf.lite`
    *   Legalization for `NMS` ops in TFLite.
    *   add `narrow_range` and `axis` to `quantize_v2` and `dequantize` ops.
    *   Added support for `FusedBatchNormV3` in converter.
    *   Add an `errno`-like field to `NNAPI` delegate for detecting `NNAPI`
        errors for fallback behaviour.
    *   Refactors `NNAPI` Delegate to support detailed reason why an operation