Enhance Redux Injector to accept optional extra arguments

[agubler]

Enhancement

It would be useful to be able to pass additional arguments that will get injected along with the redux store so that other resources can be made available when mapping properties in the getProperties function.

const injector = new ReduxInjector(store, { /* extra arguments */ });

And available for usage

getProperties({ store, extraOptions }) {
    // use extraOptions here
}