Add a Portable Release

[axiomgraph]

This PR adds support for building a portable version of WanGP packaged in split 7z archives:

Files: WanGP-Portable.7z.001, WanGP-Portable.7z.002

Total Size: ~2.2 GB

Details:

Built with Python 3.10.9

Uses PyTorch 2.8

Includes two batch files for launching and updating the app (Updating requires Git to be installed)

Future improvement: use pygit2 for in-app updating

Currently configured to use SDPA

[deepbeepmeep]

thx, could you please change pytorch version to 2.7.1 as i have spotted some RAM issues

[axiomgraph]

Changed Torch Version To 2.7.1+cu128

Note: The embedded Python of WanGP Portable did not come with certain Python development headers and libraries that are needed for Triton. Therefore, users who want to use Sage Attention in the portable version need to obtain those files by downloading and installing the full Python installer from the Python site. The Python version they should be downloading is the exact same Python version that portable WanGP uses(Currently : 3.10.9). After installing, copy the Include and libs folders from the Python installation folder and paste them inside the embedded Python folder of WanGP. Then, install the triton-windows and sage-attention packages.

Example of This Workflow

[madias123]

Grateful feedback: The latest version with Sage attention works fabulously with my RTX-5060Ti-16GB!