modify mvs-cli main.cpp, support -c option to specify config file
modify mvs-cli main.cpp, support -c option to specify config file

mvs-org/metaverse,mvs-live/metaverse,the-metaverse/metaverse,mvs-org/metaverse,the-metaverse/metaverse,mvs-org/metaverse,mvs-live/metaverse,mvs-org/metaverse,mvs-org/metaverse,the-metaverse/metaverse,mvs-org/metaverse