Add WSL Codegen Init Script

[codegen-sh]

This PR adds a PowerShell script to initialize a Codegen project in a Windows folder through WSL2, combining the steps of creating a directory in WSL2 and running codegen init in a single command.

Features

• Initializes a Codegen project in WSL2 from Windows
• Verifies that both Windows and WSL2 paths are accessible
• Creates the destination directory in WSL2 if it doesn't exist
• Optional integration with the Windows to WSL2 sync tool from PR Add Windows to WSL2 one-way sync tool #1
• Detailed logging of all operations

Files Added

1. wsl-codegen-init.ps1 - The main script that initializes Codegen in WSL2
2. wsl-codegen-init-readme.md - Documentation with usage instructions

Usage

The script can be run with the following command:

.\wsl-codegen-init.ps1 -WindowsPath "C:\Users\L\Desktop\WORKSPACE" -WslPath "/home/l/Workspace"

To also set up continuous sync (requires the sync script from PR #1):

.\wsl-codegen-init.ps1 -WindowsPath "C:\Users\L\Desktop\WORKSPACE" -WslPath "/home/l/Workspace" -SetupSync

This addresses the user's request to merge the commands for initializing a codebase in a Windows folder through WSL2.