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* fluid int8 train and trt int8 predict align.
trt int8 predict init
op converter

* 2. align fluid int8 train and trt int8 inference.
enhance quant dequant fuse pass
enhance op converter, trt engine, trt engine op, trt subgraph pass.

* 3. add delete_quant_dequant_pass for trt

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* 4. add the missing file
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* 5. i modify the c++ interface, but forget to modify the pybind code
fix the IS_TRT_VERSION_GE bug, and fix elementwise op converter
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ban all trt ut. will fix it later.

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1). add static trt load model
2). fix bug: when device_id is not 0, the trt will have a bug
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add simple static mode loading
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1. bind trt input and output to fluid tensors

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1). add static trt load model
2). fix bug: when device_id is not 0, the trt will have a bug
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add simple static mode loading
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1. bind trt input and output to fluid tensors

BUG: After continuing to input different data, the output cannot be aligned
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fix comments

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