Allow additional properties with `@Configuring`

[JavierSegoviaCordoba]

@Configuring only supports one Action<T> param:

@Configuring
public fun bar(action: Action<Bar>) {
    action.execute(bar)
}

I would like to add a parameter to enable/disable a configuration:

@Configuring
public fun bar(enabled: Boolean = true, action: Action<Bar>) {
    bar = enabled
    action.execute(bar)
}

If I set that property manually in .dcl, it is too late and it keeps false even when it should be enabled, some samples:

// does not work
foo {
    bar {
        enabled = true // too late as I am configuring `foo`
        ...
    }
}

// works
foo {
    barEnabled = true // it uses `bar.enabled` under the hood (*)
    bar {
        ...
    }
}

// (*)
@Restricted
public abstract class Foo {

    @get:Nested public abstract val bar: Bar

    @get:Restricted
    public var barEnabled: Boolean
        get() = bar.enabled
        set(value) {
            bar.enabled = value
        }

    //...
}

Ideally, I would like to do:

// 1.
foo {
    bar(enabled = true) {
        ...
    }
}

// 2.
foo {
    bar { // same as above as default param is `true`
        ...
    }
}

// 3.
foo {
    bar(enabled = false) {
        ...
    }
}

I tried @Adding too with no luck.