Adds mention of Isaac Launchable to Quickstart (#3952)

# Description

Adds a brief section to Quickstart guide about the Isaac Launchable
project on NVIDIA Brev. This is a low-friction way for users to try
Isaac Lab without manual installation or local compute.

This also adds a "Deploy now" button with a direct link to the current
Launchable.

## Type of change

- Documentation update

## Screenshots

Section added:

<img width="1203" height="678" alt="Screenshot 2025-11-05 at 7 15 22 PM"
src="https://github.com/user-attachments/assets/0474ed2e-6d36-4da6-8b4d-9ea19d9c77cf"
/>

## Checklist

- [X] I have read and understood the [contribution
guidelines](https://isaac-sim.github.io/IsaacLab/main/source/refs/contributing.html)
- [X] I have run the [`pre-commit` checks](https://pre-commit.com/) with
`./isaaclab.sh --format`
- [X] I have made corresponding changes to the documentation
- [X] My changes generate no new warnings
- [ ] I have added tests that prove my fix is effective or that my
feature works
- [X] I have updated the changelog and the corresponding version in the
extension's `config/extension.toml` file
- [X] I have added my name to the `CONTRIBUTORS.md` or my name already
exists there

CONTRIBUTORS.md

@@ -126,6 +126,7 @@ Guidelines for modifications:
 * Ryley McCarroll
 * Sergey Grizan
 * Shafeef Omar
+* Shane Reetz
 * Shaoshu Su
 * Shaurya Dewan
 * Sixiang Chen

docs/source/setup/quickstart.rst

@@ -134,6 +134,22 @@ Installation is now as easy as navigating to the repo and then calling the root
          isaaclab.bat --install :: or "isaaclab.bat -i"
 
 
+Quick Start Using Isaac Launchable
+----------------------------------
+
+For users first learning Isaac Lab, without sufficient local compute resources, the `Isaac Launchable <https://github.com/isaac-sim/isaac-launchable>`_ project is a quick way to get started without manual installation.
+
+Through this project, users can interact with Isaac Sim and Isaac Lab purely from a web browser, with one tab running Visual Studio Code for development and command execution, and another tab providing the streamed user interface for Isaac Sim.
+
+This method uses `NVIDIA Brev <https://brev.nvidia.com/>`_, a platform that offers easily configurable pay-by-the-hour cloud compute. Brev Launchables are preconfigured, optimized compute and software environments.
+
+To try now, click the button below. To learn more about how to use this project, or how to create your own Launchable, please see the project repo `here <https://github.com/isaac-sim/isaac-launchable>`_.
+
+.. image:: https://brev-assets.s3.us-west-1.amazonaws.com/nv-lb-dark.svg
+   :target: https://brev.nvidia.com/launchable/deploy?launchableID=env-31ezDWyp4LvtDQr5rUhAWOUMFhn
+   :alt: Click here to deploy
+
+
 Launch Training
 -------------------