[core.room.ui] ignore *._trace

Change-Id: Id2d6c0afeddb3ee1489b78bf0ac1d73c66d61229
diff --git a/plugins/org.eclipse.etrice.core.room.ui/.gitignore b/plugins/org.eclipse.etrice.core.room.ui/.gitignore
index ac93739..e333a3e 100644
--- a/plugins/org.eclipse.etrice.core.room.ui/.gitignore
+++ b/plugins/org.eclipse.etrice.core.room.ui/.gitignore
@@ -1,2 +1,3 @@
 bin
 *.launch
+*._trace