Kiota http request adapter implementation for httpx library

Microsoft Kiota HTTP library The Microsoft Kiota HTTP Library is a python HTTP implementation with HTTPX library. A Kiota generated project will need a reference to a http package to to make HTTP requests to an API endpoint. Read more about Kiota here. Using the Microsoft Kiota HTTP library In order to use this library, install the package by running: pip install microsoft-kiota-http Contributing This project welcomes contributions and suggestions. Most contributions require you to agree to a Contributor License Agreement (CLA) declaring that you have the right to, and actually do, grant us the rights to use your contribution. For details, visit https:/cla.opensource.microsoft.com. When you submit a pull request, a CLA bot will automatically determine whether you need to provide a CLA and decorate the PR appropriately (e.g., status check, comment). Simply follow the instructions provided by the bot. You will only need to do this once across all repos using our CLA. This project ha