Colcon PowerShell Extension

colcon-powershell is an extension for the colcon build tool, providing support for generating and sourcing PowerShell setup scripts. It's a key component for ROS 2 development on Windows, allowing users to easily set up their environment after building. It's currently at version 0.5.0 and follows the release cadence of the wider colcon/ROS 2 ecosystem, with stable but not frequent updates.