Create command: bf luis:version:import

[munozemilio]

This command should expose this request exposed in the azure sdk client

e.g

const msRest = require("ms-rest");
const LUISAuthoringClient = require("azure-cognitiveservices-luis-authoring");
const subscriptionKey = "xxxxxxxxxx";
const token = { 
    "inHeader": { 
        'Ocp-Apim-Subscription-Key': subscriptionKey 
    }
};
const creds = new msRest.ApiKeyCredentials(token);
const client = new LUISAuthoringClient(creds, 'https://westus.api.cognitive.microsoft.com');
const appId = 'xxxxxxxxxx'
const versionId = "xxx";

client.baseUri = 'https://westus.api.cognitive.microsoft.com/luis/authoring/v3.0-preview/';

const exportVersion = async function(){
    let result = await client.versions.exportMethod(appId, versionId)
    console.log(JSON.stringify(result, null, 2)); 
}

const listPhraseLists = async function(){
    let result = await client.features.listPhraseLists(appId, versionId)
    console.log(JSON.stringify(result, null, 2)); 
}

exportVersion()
listPhraseLists()

[jspruance]

code complete - pr:
#369

[jspruance]

merged to master