Add autoref name for system test

\graphicspath{{graphics}}

\newcounter{testcounter}

\newcommand*{\testcounterautorefname}{System Test}

\newtcolorbox[use counter=testcounter]{test}[2][]{%

colback=lightgray,colframe=gray,coltitle=white,fonttitle=\bfseries,segmentation style={draw=gray, solid, very thick},

    title=System Test \thetcbcounter: #2,#1}