Adds all test temp files to ignore

.gitignore

-U1_Datentypen/.libwork
-U1_Datentypen/modelsim.ini
-U1_Datentypen/transcript
-U1_Datentypen/vish_stacktrace.vstf
-U1_Datentypen/vsim.wlf
-U1_Datentypen/work/
-U2_Entity_Component/.libwork
-U2_Entity_Component/modelsim.ini
-U2_Entity_Component/transcript
-U2_Entity_Component/vsim.wlf
-U2_Entity_Component/work/
+*/vish_stacktrace.vstf
+*/.libwork
+*/modelsim.ini
+*/transcript
+*/vsim.wlf
+*/work/