Improve Frida util: Specify Overload

[bernhste]

Taken from #3365

At the moment, all overloads of a method are hooked, but it may be helpful, to specify which one we are interested in.

In MASTG-DEMO-0058 this doesn't seem to be causing trouble here but we definitely need to be able to specify an overload and maybe, if empty, try to hook all.

In MASTG-DEMO-0002 this is a problem though.

var target = {
    category: "STORAGE",
    demo: "0002",
    hooks: [
        {
            class: "android.content.ContentResolver",
            methods: [
                "insert"
            ]
        }
    ]
};