Add test resource dir for vlc plugin

Change-Id: I19e0e2da3fe8d22b633c3f8363516d2bd77bf0a8
Reviewed-on: http://gerrit.dmdirc.com/3902
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Greg Holmes <greg@dmdirc.com>

build.gradle

@@ -28,6 +28,9 @@ subprojects {
             java {
                 srcDir 'test'
             }
+            resources {
+                srcDir 'test-res'
+            }
         }
     }