YaruMasterDetailPage: add tile builder

[jpnurmi]

This gives full control over master-detail tiles. Notice that YaruMasterTile can be wrapped with any other widget such as Tooltip or Semantics.

Before

YaruMasterDetailPage(
  iconBuilder: (context, index, selected) => const Icon(Icons.foo),
  titleBuilder: (context, index, selected) => const Text('Title'),
)

After

YaruMasterDetailPage(
  tileBuilder: (context, index, selected) => YaruMasterTile(
    leading: const Icon(Icons.foo),
    title: const Text('Custom'),
    subtitle: const Text('Lorem ipsum...'),
    trailing: const Chip(label: Text('123'),
    onTap: () {},
  ),
)

Ref: #255

[Jupi007]

Honestly this is really nice.
And the compact mode switcher still work :D

Tested and approved for me :)
Thanks!

[Feichtmeier]

Checked out and tested locally everything works!
If one might be super picky maybe this would also be named titleBuilder instead? :)

[jpnurmi]

title, subtitle, leading, etc. are ordinary Widget properties of YaruMasterTile, similarly to the respective properties of ListTile :)

[jpnurmi]

Thank you! 🎉 We'll continue with the app bars next, and explore similar possibilities for the compact layout, too! 😉