init fixes, addRoute
init fixes, addRoute

- Automatically init the router
  Made async since content cz-page-route elements might not be upgraded
- Add option for "manualInit" to not init automatically
- Actually make use of already inited check
- Expose "addRoute" method for easy route additions through JS

Neovici/cosmoz-page-router,Neovici/cosmoz-page-router,Neovici/cosmoz-page-router