docs: add WSL installation guide

docs/docs/wsl.md

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+# WSL Setup Guide
+Steps to run Eliza on Windows computer using WSL.
+AI Dev School Tutorial: https://www.youtube.com/watch?v=ArptLpQiKfI
+
+
+## Install WSL
+
+1. Open PowerShell as Administrator and run:
+```powershell
+wsl --install
+```
+
+2. Restart your computer
+3. Launch Ubuntu from the Start menu and create your Linux username/password
+
+## Install Dependencies
+
+1. Update Ubuntu packages:
+```bash
+sudo apt update && sudo apt upgrade -y
+```
+
+2. Install system dependencies:
+```bash
+sudo apt install -y \
+    build-essential \
+    python3 \
+    python3-pip \
+    git \
+    curl \
+    ffmpeg \
+    libtool-bin \
+    autoconf \
+    automake \
+    libopus-dev
+```
+
+3. Install Node.js via nvm:
+```bash
+curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.7/install.sh | bash
+source ~/.bashrc
+nvm install 20
+nvm use 20
+```
+
+4. Install pnpm:
+```bash
+curl -fsSL https://get.pnpm.io/install.sh | sh -
+source ~/.bashrc
+```
+
+## Optional: CUDA Support
+
+If you have an NVIDIA GPU and want CUDA support:
+
+1. Install CUDA Toolkit on Windows from [NVIDIA's website](https://developer.nvidia.com/cuda-downloads)
+2. WSL will automatically detect and use the Windows CUDA installation
+
+## Clone and Setup Eliza
+
+Follow the [Quickstart Guide](./quickstart.md) starting from the "Installation" section.
+
+## Troubleshooting
+
+- If you encounter `node-gyp` errors, ensure build tools are installed:
+```bash
+sudo apt install -y nodejs-dev node-gyp
+```
+
+- For audio-related issues, verify ffmpeg installation:
+```bash
+ffmpeg -version
+```
+
+- For permission issues, ensure your user owns the project directory:
+```bash
+sudo chown -R $USER:$USER ~/path/to/eliza
+```