generate-event: Add Amazon Lex V2

[michaelbrewer]

Describe your idea/feature/enhancement

Amazon Lex V2 is missing from sam local generate-event

Proposal

Add Amazon Lex V2 event to generate-event based on real world testing:

{
    "sessionId": "254688924456798",
    "inputTranscript": "01/01/1990",
    "interpretations": [
        {
            "intent": {
                "slots": {
                    "dateofBirth": {
                        "shape": "Scalar",
                        "value": {
                            "originalValue": "01/01/1990",
                            "resolvedValues": [
                                "1990-01-01"
                            ],
                            "interpretedValue": "1990-01-01"
                        }
                    },
                    "accountType": {
                        "shape": "Scalar",
                        "value": {
                            "originalValue": "savings",
                            "resolvedValues": [
                                "Savings"
                            ],
                            "interpretedValue": "Savings"
                        }
                    }
                },
                "confirmationState": "None",
                "name": "CheckBalance",
                "state": "ReadyForFulfillment"
            },
            "nluConfidence": 1
        },
        {
            "intent": {
                "slots": {},
                "confirmationState": "None",
                "name": "FallbackIntent",
                "state": "ReadyForFulfillment"
            }
        },
        {
            "intent": {
                "slots": {},
                "confirmationState": "None",
                "name": "Welcome",
                "state": "ReadyForFulfillment"
            },
            "nluConfidence": 0.23
        }
    ],
    "responseContentType": "text/plain; charset=utf-8",
    "sessionState": {
        "sessionAttributes": {},
        "activeContexts": [],
        "intent": {
            "slots": {
                "dateofBirth": {
                    "shape": "Scalar",
                    "value": {
                        "originalValue": "01/01/1990",
                        "resolvedValues": [
                            "1990-01-01"
                        ],
                        "interpretedValue": "1990-01-01"
                    }
                },
                "accountType": {
                    "shape": "Scalar",
                    "value": {
                        "originalValue": "savings",
                        "resolvedValues": [
                            "Savings"
                        ],
                        "interpretedValue": "Savings"
                    }
                }
            },
            "confirmationState": "None",
            "name": "CheckBalance",
            "state": "ReadyForFulfillment"
        },
        "originatingRequestId": "f57dfc3f-44be-4df9-ae72-9681fc14e67f"
    },
    "messageVersion": "1.0",
    "invocationSource": "FulfillmentCodeHook",
    "transcriptions": [
        {
            "transcription": "01/01/1990",
            "transcriptionConfidence": 1,
            "resolvedSlots": {
                "dateofBirth": {
                    "shape": "Scalar",
                    "value": {
                        "originalValue": "01/01/1990",
                        "resolvedValues": [
                            "1990-01-01"
                        ]
                    }
                }
            },
            "resolvedContext": {
                "intent": "CheckBalance"
            }
        }
    ],
    "inputMode": "Text",
    "bot": {
        "aliasName": "TestBotAlias",
        "aliasId": "TSTALIASID",
        "name": "BankingBot",
        "version": "DRAFT",
        "localeId": "en_US",
        "id": "J866BA0UQC"
    }
}

Additional Details

• https://docs.aws.amazon.com/lexv2/latest/dg/lambda.html
• https://aws.amazon.com/getting-started/hands-on/create-banking-bot-on-amazon-lex-v2-console/
• https://github.com/DefinitelyTyped/DefinitelyTyped/blob/master/types/aws-lambda/trigger/lex-v2.d.ts

[mingkun2020]

Thanks @michaelbrewer for the contribution, we will take time to review your pr.