PowerShell script that makes ChatGPT Desktop available as a target for the Windows 11 Copilot hardware key.
It finds ChatGPT's MSIX AUMID, writes the CopilotKey\SetCopilotHardwareKey policy
under HKCU, verifies the value, and opens the "Customize Copilot key on the
keyboard" settings page so you can pick ChatGPT. The policy makes ChatGPT available
as a Copilot key choice; you still select it on that page to make it the active
target. Run with -Revert to remove the option.