GitLab

Update the URLs for downloading the `magic-pdf.template.json` and `small_ocr.pdf`
files in the Windows CUDA acceleration guides. The links now point to the giteerepository instead of GitHub, ensuring users have access to the necessary files
from the correct source.

Add a new README_Ubuntu_CUDA_Acceleration_en_US.md document to provide users with a
setup guide for enabling and testing CUDA acceleration on Ubuntu 22.04 LTS. The guideincludes steps to check and install NVIDIA drivers, install Anaconda, create a conda
environment, install required applications, download and verify models, configure theenvironment, and test CUDA acceleration.

This addition addresses the need for clear, concise instructions on achieving better
performance with CUDA-enabled graphics cards and