gpo-lock screen

::Support Window 1803+

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\PersonalizationCSP]
"LockScreenImageUrl"="C:\\ProgramData\\Microsoft\\Lockscreen\\screen_lock.jpg"
"LockScreenImageStatus"=dword:00000001
"LockScreenImagePath"="C:\\ProgramData\\Microsoft\\Lockscreen\\screen_lock.jpg"

[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\Personalization]
"LockScreenImage"="C:\\ProgramData\\Microsoft\\Lockscreen\\screen_lock.jpg"
"NoChangingLockScreen"=dword:00000001
"NoLockScreen"=dword:00000000