Feature Request: GoogleCloudSpeech - Add method parameters to set use_enhanced and model options

[HideyoshiNakazone]

Feature Requested

Add parameters use_enhanced and model to the recognize_google_cloud method to set their respective values in the RecognitionConfig

Expected behaviour

Give more customizable options for the user and better results in specific cases

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Would you like me to give it a try or would you like to think about this Feature Request a little?

Thank you for all your work,
Vitor Hideyoshi

[HideyoshiNakazone]

I created a the merge request #735 proposing a implementation for this feature request.
Please take a look and if this feature is of interest please give your opinion on my implementation. :)