feat: generate output.cmake file

[fruzitent]

Example

set(CPACK_PROPERTIES_FILE "${CMAKE_BINARY_DIR}/CPackProperties.local.cmake")
include(CPack)
file(WRITE "${CPACK_PROPERTIES_FILE}" "\
    include(${GIT_WATCHER_OUTPUT_PATH})
    set(CPACK_PACKAGE_FILE_NAME \"\")
    list(APPEND CPACK_PACKAGE_FILE_NAME \"${CMAKE_PROJECT_NAME}\")
    list(APPEND CPACK_PACKAGE_FILE_NAME \"${CMAKE_PROJECT_VERSION}\")
    list(APPEND CPACK_PACKAGE_FILE_NAME \"\$\{GIT_DESCRIBE\}\")
    string(REPLACE \";\" \"-\" CPACK_PACKAGE_FILE_NAME \"\$\{CPACK_PACKAGE_FILE_NAME\}\")
")

CPack: - package: ./out/app-0.1.0-2642e67.tar.gz generated.