[BUG] Generate proper Python stubs

[//]: # "SPDX-FileCopyrightText: Copyright (c) 2022-2023 NVIDIA CORPORATION & AFFILIATES. All rights reserved." [//]: # "SPDX-License-Identifier: Apache-2.0" [//]: # "" [//]: # "Licensed under the Apache License, Version 2.0 (the 'License');" [//]: # "you may not use this file except in compliance with the License." [//]: # "You may obtain a copy of the License at" [//]: # "http://www.apache.org/licenses/LICENSE-2.0" [//]: # "" [//]: # "Unless required by applicable law or agreed to in writing, software" [//]: # "distributed under the License is distributed on an 'AS IS' BASIS" [//]: # "WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied." [//]: # "See the License for the specific language governing permissions and" [//]: # "limitations under the License." **Describe the bug** A clear and concise description of the bug. Python API doesn't have stubs which means that IDEs have no idea what functions are even available. **Steps/Code to reproduce bug** Follow this guide http://matthewrocklin.com/blog/work/2018/02/28/minimal-bug-reports to craft a minimal bug report. This helps us reproduce the issue you're having and resolve the issue more quickly. **Expected behavior** A clear and concise description of what you expected to happen. When I type `cvcuda.` in my IDE (like VS Code) I expect it to show all the options for the API including the docstrings that match the help text which I can see when running `help(cvcuda.osd_into)` or whatever for any functions. Also `osd_into` in particular isn't even documented on the API website but it's an important and useful feature (don't remove the function!). **Environment overview (please complete the following information)** - Environment location: [Bare-metal, Docker, Cloud(specify cloud provider)] installed w poetry and pyenv. IDE VS Code - Method of cuDF install: [Docker, pip, or from source] poetry - If method of install is [Docker], provide `docker pull` & `docker run` commands used **Environment details** Please run and paste the output of the `cvcuda/print_env.sh` script here, to gather any other relevant environment details That file doesn't exist in the python installation from pypi cvcuda-cu12 using version 0.16.0 so I can't even run this **Additional context** Add any other context about the problem here. In my pyenv, these are the cvcuda files that I see: <img width="325" height="400" alt="Image" src="https://github.com/user-attachments/assets/8f4e0b78-5216-4d51-8ddd-105d55e35170" /> and this is what is in the __init__ <img width="972" height="492" alt="Image" src="https://github.com/user-attachments/assets/22457a38-2ca1-4d98-befa-7274341736cc" />