Describe the feature and the current behavior/state.
目前只有一种方式开关 Normalization，且影响全局，不能以单个对象控制。
HanLP.Config.Normalization = true

Will this change the current api? How?
希望 ViterbiSegment 添加配置方法，能够单独配置是否进行 Normalize。eg:
new ViterbiSegment().enableNormalize(bool)

Who will benefit with this feature?

Are you willing to contribute it (Yes/No):

System information

• OS Platform and Distribution (e.g., Linux Ubuntu 16.04):
• Python version:
• HanLP version:

Any other info

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