Add Inception-V4 for Fluid.

[lcy-seso]

Add inception-V4 for Fluid.

Can take this https://github.com/PaddlePaddle/models/blob/develop/image_classification/inception_v4.py as a reference.

[xymyeah]

认领

由于之前认领的op已经被别的同学实现PaddlePaddle/Paddle#8127 ，重新认领一个

[lcy-seso]

收到。感谢贡献。

[shanyi15]

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