ETS2 - Mirror Cam All Truck

External view and front mirror cams are being added

-External point of view indication and f_mirror cam
-f_mirror cam and external point of view

iveco.hiway
-renault.magnum 
-man.tgx_euro6 (slim mirror cam)
-mercedes.actros2014 (slim mirror cam)
-mercedes.actros (slim mirror cam)
-scania.s_2016 (slim mirror cam)
-scania.r_2016 (slim mirror cam)
-volvo.fh16 (slim mirror cam)
-volvo.fh16_2012 (slim mirror cam , reworked volvo.fh16_2012,2018 f_mirror)
-renault.magnum mirror cam location fix
-add renault.magnum f_mirror Corner Cam
-Side mirrors can be removed
-Fix not being able to remove Iveco Daf mirror (option no mirror)

Authors: Seogi