cmake LEMON examples

alicevision/AliceVision src/CMakeLists.txt :478 

find_package(LEMON REQUIRED)

hjwdzh/QuadriFlow CMakeLists.txt :42 

find_package(LEMON QUIET NO_MODULE)

3dv-casia/PanoVLM CMakeLists.txt :56 

find_package(Lemon QUIET)