make visualizer working

[LeoZhao-Intel]

test=develop

[luotao1]

@fc500110 Could you help see this PR, since #16177 remove the visualizer.

[fc500110]

Visualizer is out of date, it's more convenient to draw with Python API.

from paddle import fluid
exe = fluid.Executor(fluid.CPUPlace())
with fluid.scope_guard(fluid.core.Scope()):
    [program, feed, fetch] = fluid.io.load_inference_model('model', exe)
    graph = fluid.framework.IrGraph(fluid.core.Graph(program.desc), for_test=False)
    graph.draw('./path_to_save', 'graph')

[luotao1]

Thanks for your contribution. Close it due to #16177.