[Consumption] The user wants to add two parameters: startDate and endDate

Hi teams,

The user submitted a PR[#20792](https://github.com/Azure/azure-sdk-for-python/pull/20792) under[ SDK for Python](https://github.com/Azure/azure-sdk-for-python).

He wanted to add `startDate` and `endDate` functionality for the Consumption Usage Details List API call.

This is a meaningful contribution and is recommended to be adopted.

swwagger link: https://github.com/Azure/azure-rest-api-specs/blob/main/specification/consumption/resource-manager/Microsoft.Consumption/stable/2021-10-01/consumption.json#L106

Start with the Consumption specification at the linked consumption.json location, around line 106, and inspect the Usage Details List API operation. Confirm how the startDate and endDate parameters should be represented there; done means the specification exposes both parameters for that API call and the related validation passes.

Written by the indexing model from the issue text.