Combine more apps into one (like Ionic View)?

At work I have developed more than 20 Ionic apps. All very similar, all using the same Ionic Native and Cordova plugins.

I have now been asked to merge all the apps into one and this immediately reminded me of Ionic View: a single app containing multiple Ionic apps inside.

Is anyone able to offer some suggestions/guide me in the right direction? I honestly don’t even know where to start!