Merge topic 'find_item-query-windows-registry'

8d7e80cf3d find_* commands: add control over Windows registry views
08941a9a40 cmWindowsRegistry: Add helper for conversion between string and enum View
769f25aa3c cmWindowsRegistry: enhance unicode conversions

Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !7211