package: strip jar specific files when shading

these files will make the jar incorrect if copied blindly.
the maven-shade-plugin has similar logic

package/target_init.gradle

@@ -62,6 +62,9 @@ allprojects {
 				it.isDirectory() ? it : project.zipTree(it)
 			}
 		}
+
+		exclude "META-INF/INDEX.LIST"
+		exclude "**/module-info.class"
 	}
 
 	task runelitePluginHubManifest {