[Feat] Added new options parameter to override single action reducer default behavior

[igorDykhta]

This PR implements the ability to override reducer single action default behavior through plugin.

Developers can override default behavior by doing the following:

const customReducer = keplerGlReducer
    .plugin(
      {
        [ActionTypes.LAYER_TYPE_CHANGE]: (state, action) => {
          return {
            ...state,
            visState: {
              ...layerTypeChangeUpdater(state.visState, action),
              // do the default behavior and update layerOrder to empty
              layerOrder: []
            }
          };
        }
      },
      {override: {[ActionTypes.LAYER_TYPE_CHANGE]: true}}
    );