feat(byoc): bring your own ComfyUI

[eliteprox]

This pull request introduces a new "bring your own workspace" Dockerfile for ComfyStream (Dockerfile.byow), adds comprehensive documentation for this workflow, and updates the base Dockerfile to use newer versions of ComfyUI and ComfyUI-Manager. It also improves environment setup, dependency management, and integration with ComfyStream, while updating references to Livepeer documentation. The server code is updated to blacklist the ComfyUI-Manager node during inference for compatibility.

New bring-your-own-workspace workflow:

• Added Dockerfile.byow to support mounting and managing a user’s own ComfyUI workspace, including custom nodes and models. The Dockerfile sets up a virtual environment using uv, installs dependencies, and integrates ComfyStream automatically.
• Added docker/entrypoint-byow.sh to handle workspace setup, virtual environment activation, and conditional launching of ComfyUI or custom commands.
• Added README-BYOW.md with detailed instructions for building, running, and troubleshooting the bring-your-own-workspace container.

Base image and dependency updates:

• Updated docker/Dockerfile.base to use ComfyUI v0.3.60 and install ComfyUI-Manager, ensuring compatibility with new features and workflows. Also installs ComfyUI-Manager requirements. [1] [2]
• Updated pyproject.toml to use a newer version of ComfyUI from the hiddenswitch fork.

Server compatibility and documentation:

• Updated server/app.py and server/frame_processor.py to blacklist the ComfyUI-Manager node during inference, preventing potential issues with custom node execution. [1] [2]
• Updated README.md to reference the Livepeer fork and documentation, reflecting the project’s migration and providing accurate installation instructions. [1] [2]