finish widowx eval code

[HaomingSong]

What does this PR do?

finish widowx eval code

Before submitting

• This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case).
• Was this discussed/approved via a GitHub issue? Please add a link to it if that's the case.
• Did you make sure to update the documentation with your changes?
• Did you write any new necessary tests?

[Copilot]

Pull Request Overview

This PR implements evaluation code for running EO-1 models on WidowX 250s robots. The implementation provides a complete pipeline for real-world robot control using vision-language-action models.

Key changes:

• Complete WidowX robot environment wrapper with gym interface and receding horizon control
• Evaluation script for running EO-1 models on physical WidowX robots
• Setup instructions and configuration for both single-machine and dual-machine deployment modes

Reviewed Changes

Copilot reviewed 7 out of 8 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
experiments/5_widowx/widowx_env.py	Core gym environment wrapper with RHC support and sticky gripper logic
experiments/5_widowx/eval_widowx.py	Main evaluation script for running EO-1 on WidowX robots
experiments/5_widowx/requirements.txt	Python dependencies for the WidowX evaluation setup
experiments/5_widowx/README.md	Complete setup and usage documentation
.gitmodules	Added submodules for bridge_data_robot and edgeml dependencies

---

_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}

[Copilot]

Pull Request Overview

Copilot reviewed 7 out of 8 changed files in this pull request and generated 2 comments.

---

_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}

[Copilot]

Pull Request Overview

Copilot reviewed 7 out of 8 changed files in this pull request and generated 1 comment.

---

_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}