Feature: Dynamic titles for screens

[0x1026]

We're seeing 'Pokedex' on all the screens except for 'Type Effects', because we are saying explicitly the name of the screen:

We should use something like this on all screens:

But first it would be necessary to integrate that the title is changed automatically when changing the route.

[hungps]

@hugovidafe That could be, but some of the screens use customized AppBar with the dynamic title (for example pokemon_info), and by specifying the global AppBar we are forced to use it on every screen. Unless there is a way to override our customized global AppBar. Any idea?