CPackIFW: add support for signing generated app bundles on macOS
Adds the CPACK_IFW_SIGNING_IDENTITY CPackIFW variable.
This variable mirror the --sign option of the QtIFW binarycreator.
Fixes: #22927 (closed)
Adds the CPACK_IFW_SIGNING_IDENTITY CPackIFW variable.
This variable mirror the --sign option of the QtIFW binarycreator.
Fixes: #22927 (closed)