added hFlip and vFlip params to launch files

[JanLipovsek]

Added hFlip and vFlip parameters to launch files. These these parameters are used when the camera is mounted from the bottom (cable connects from the bottom i.e. partybot) as opposed to the standard top mounted camera (cable connects from the top i.e. base magni). If the camera is mounted from the bottom hFlip and vFlip should me set to true, otherwise it should be left on default i.e. false

[JanLipovsek]

It worked on a real camera. So I think we're good.