Feature request: Missing Querystring values from WebSocket data classes

[dave-dotnet-overall]

Use case

The recent data classes introduced in #6287 do not expose queryStringParameters or multiValueQueryStringParameters properties

Solution/User Experience

`
from aws_lambda_powertools.utilities.data_classes import (
APIGatewayWebSocketEvent,
event_source,
)

@event_source(data_class=APIGatewayWebSocketEvent)
def lambda_handler(event: APIGatewayWebSocketEvent, context):
qs1 = event.queryString["param1"]

Alternative solutions

Acknowledgment

• This feature request meets Powertools for AWS Lambda (Python) Tenets
• Should this be considered in other Powertools for AWS Lambda languages? i.e. Java, TypeScript, and .NET

[leandrodamascena]

Hey @dave-dotnet-overall! Thanks for opening this here. Do you want to send a PR to fix this?

[dave-dotnet-overall]

@leandrodamascena #6411